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Plinth
Foundation Dossiers
Plinth

· Private foundation

George H & Jane a Mifflin Memorial Fund

Its FY2025 filing reports that it accepted unsolicited grant applications.

$3.4M
Granted FY2025still arriving
111
Grants FY2025still arriving
6
States reached
$150k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.

Education$12MCrime & Legal$3.3MEnvironment$2.8MHousing & Shelter$1.6MCivil Rights$1.5MHuman Services$1.0MFood & Nutrition$905kYouth Development$840kOther$0
02FY2025 · 111 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k3 grants · $15k
  • $10k–50k83 grants · $1.6M
  • $50k–250k25 grants · $1.9M
$20,000
Median grant
6
States reached
$21M
Total assets
Largest grants
RecipientAmount
THE NATIONAL EDUCATION EQUITY LAB$150,000
NATIONAL PARENTS UNION$150,000
VOLUNTEER LAWYERS PROJECT OF THE BOSTON BAR ASSOCIATION$110,000
FISHTANK LEARNING INC$100,000
POINEER INSTITUTE FOR PUBLIC POLICY$100,000
GREATER BOSTON LEGAL SERVICES$100,000
EDUCATORS FOR EXCELLENCE-MASSACHUSETTS INC$100,000
MASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION$100,000
JUST-A-START CORPORATION$75,000
TEACH FOR AMERICA- MASSACHUSETTS$75,000
CONSERVATION LAW FOUNDATION$75,000
BLESSED STEPHEN BELLESINI OSA ACADEMY$60,000
MASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION$56,000
CONSERVATORY LAB CHARTER SCHOOL FOUNDATION$50,000
FRIENDS OF SPRINGFIELD PREPARATORY CHARTER SCHOOL INC$50,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY17–25, $1.3M) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 34% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 10%THE THOMPSON SENIOR CENTER: $10k → 9%BANGOR REGION YMCA: $50k → 15%BANGOR REGION YMCA: $20k → 15%INTERFAITH SOCIAL SERVICES: $10k → 7%INTERFAITH SOCIAL SERVICES: $10k → 7%INTERFAITH SOCIAL SERVICES: $10k → 7%SECOND CHANCE CARS: $10k → 8%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%WELLSPRING HOUSE INC: $15k → 10%NATIONAL PARENTS UNION: $150k → 8%NATIONAL PARENTS UNION: $150k → 8%BUDGET BUDDIES: $10k → 8%NATIONAL PARENTS UNION: $150k → 8%RESPOND INC: $20k → 8%RESPOND INC: $15k → 8%RESPOND INC: $15k → 8%RESPOND INC: $15k → 8%RESPOND INC: $15k → 8%RESPOND INC: $15k → 8%RESPOND INC: $15k → 8%RESPOND INC: $10k → 8%RESPOND INC: $10k → 8%PROJECT JUST BECAUSE: $20k → 8%OPEN DOOR IMMIGRATION SERIVICES: $15k → 10%RIAN IMMIGRANT CENTER: $15k → 16%RIAN IMMIGRANT CENTER: $15k → 16%PLUMMER HOME FOR BOYS INC: $10k → 10%RIAN IMMIGRANT CENTER: $10k → 16%RIAN IMMIGRANT CENTER: $10k → 16%MASSACHUSETTS COALITION FOR THE HOMELESS: $20k → 10%RIAN IMMIGRANT CENTER: $10k → 16%REFUGEE AND IMMIGRANT ASSISTANCE CENTER: $10k → 16%HOUSEHOLD GOODS INC: $15k → 8%HOUSEHOLD GOODS INC: $15k → 8%HOUSEHOLD GOODS INC: $15k → 8%HOUSEHOLD GOODS INC: $15k → 8%COLLEGE BOUND DORCHESTER: $20k → 16%HOUSEHOLD GOODS INC: $15k → 8%ST FRANCIS HOUSE: $35k → 16%ST FRANCIS HOUSE: $25k → 16%ST FRANCIS HOUSE: $25k → 16%ST FRANCIS HOUSE: $20k → 16%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

AK
ME
VT
MT
NY
MA
PA
CT
RI
TX

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

95%of every dollar goes to organizations you’ve funded before.
$24M · 150 repeat orgs$1.4M to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +58% since the first grant, against +50% for the ones you funded once.

150 repeat relationships — 99 still active in FY2025, 51 since wound down; 11 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

150
57

Total granted

$24M
$1.1M

Median revenue growth · since first grant

+58%
+50%

Still filing today

66%
58%

New vs renewed · share of each year

In FY2025, 94% of grant dollars renewed an existing relationship; $210k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
EducationHuman ServicesEnvironmentHousing & ShelterYouth DevelopmentFood & NutritionOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.

Backed again, and grew

  • MASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION INC
    9× · 2017–2025 · $1.7M · revenue +58%
  • GB
    GREATER BOSTON LEGAL SERVICES INC
    9× · 2017–2025 · $1.0M · revenue +120%
  • CONSERVATION LAW FOUNDATION INC
    9× · 2017–2025 · $1.0M · revenue +113%

Funded once

  • VP
    VERITAS PREP CHARTER SCHOOL
    one grant, 2020 · $70k
  • ME
    MATCH EDUCATION
    one grant, 2017 · $50k
  • D
    DUETINC
    one grant, 2021 · $50k

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Massachusetts Education & Career Opportunities Inc

Massachusetts education and career opportunities, inc. (massedco, inc.) is a statewide network of service sites that provides education and career advising to over 12,000 low-income, first generation individuals each year. massedco…

Education
2
Massachusetts Affordable Housing Alliance Inc

Maha breaks down barriers facing first-time and first-generation home buyers and owners through education, counseling, advocacy, and grassroots organizing.

Housing & Shelter
3
New England Lawboston

New england law/boston dedicates itself to preparing students to be successful lawyers and leaders in the public and private sectors through integrated practical, theoretical and ethical education of the highest caliber and to contributing…

Education
4
Massachusetts Higher Education Assistance Corporation

The organization's primary exempt purpose is to provide access to and conduct activities in furtherance of higher education.

—
5
Boston After School & Beyond Inc

Boston after school & beyond, inc. is a public private partnership that pursues a unified after-school and summer learning system that promotes stakeholder alignment, a focus on results, and access to learning opportunities, particularly…

Education
6
Metropolitan Boston Housing Partnership Inc D/B/a Metro Housing Boston

Metro housing boston mobilizes wide-ranging resources to provide innovative and personalized services that lead families and individuals to housing stability, economic security, and an improved quality of life.

Housing & Shelter
7
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
8
Massachusetts Nonprofit Network

The mission of the massachusetts nonprofit network is to unite and strengthen the nonprofit sector in the commonwealth through public policy, public awareness, and capacity building services.

Education
9
Jewish Vocational Service Inc

To empower individuals from diverse communities to find employment and build careers, while partnering with employers to hire, develop, and retain productive workforces.

Employment
10
Massachusetts Housing Investment Corporation

Mhic's mission is to be an innovative private financier of afforable housing and community development throughout new england, providing financing that would not otherwise be available, and extending the impact of that financing to ensure…

Housing & Shelter
11
Boston Harbor Now Inc

Our mission is to ensure that the people of greater boston benefit from a vibrant, resilient, and inclusive waterfront, harbor, and islands; these spaces are equitable, accessible, and adapted to climate change; and to ensure our public,…

Environment
12
Massachusetts Fair Housing Center Inc

Mfhc is committed to ending systemic housing discrimination and creating inclusive communities through education, outreach, advocacy, housing counseling and enforcement.

Housing & Shelter

For reference, the grantee most central to the portfolio’s shape is More Than Words Inc and the most unlike its peers is Trustees for Alaska. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyPrivate Grantmaking Foundat…Performing Arts Organizatio…Professional Associations &…Community Health ServicesAffordable Housing Developm…Children and Disability Ser…Independent Schools & Acade…Advocacy and Education Orga…
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 29 years old; the field is 17. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number20%1%<5yr14%6%5–10yr20%21%10–20yr19%32%20–35yr13%31%35–55yr14%10%55yr+
THE FIELDby orgYOUR MONEYby value20%0%<5yr14%12%5–10yr20%12%10–20yr19%34%20–35yr13%24%35–55yr14%19%55yr+

The field is 20% startups (under 5 years old) — 1% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.7% lost their exemption, against 11% of the field you don’t fund.

orgs you fund
0.7%1/147
the rest of the field
11%
2,955/27,557

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

142 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 142 of the 218 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

1
Load-bearing (≥25% of a budget)
61
Early backer (in before they grew)
138/142
Grantees still filing
106/142
Grew since you first funded

Where your money sits — by cause, then by grantee

GREATER BOSTON LEGAL SERVICES INC — $1,025,000 · OtherGREATER BOSTON LEGAL SERVICES INCEDUCATORS FOR EXCELLENCE-BOSTON — $900,000 · OtherEDUCATORS FOR EXCELLENCE-BOSTONTEACH FOR AMERICA - MASSACHUSETTS — $650,000 · OtherTEACH FOR AMERICA - MASSACHUSETTS+112 more — $8,480,000 · Other+112 moreMASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION INC — $1,732,000 · EducationMASSACHUSETTS CHARTER PUB…National Education Opportunity Network Inc — $450,000 · EducationNational Education Opport…Blessed Stephen Bellesini OSA Academy Inc — $410,000 · EducationBlessed Stephen Bellesini…JFYNETWORKS A NONPROFIT CORPORATION — $310,000 · EducationJFYNETWORKS A NONPROFIT C…FISHTANK LEARNING INC — $300,000 · EducationFISHTANK LEARNING INCNOTRE DAME CRISTO REY HIGH SCHOOL INC — $235,000 · EducationKIPP MASSACHUSETTS INC — $215,000 · EducationTHE MATCH FOUNDATION INC — $200,000 · Education+26 more — $1,665,500 · Education+26 moreCONSERVATION LAW FOUNDATION INC — $1,025,000 · EnvironmentCONSERVATION…SITKA CONSERVATION SOCIETY — $480,000 · EnvironmentSITKA CONSER…TRUSTEES FOR ALASKA — $230,000 · EnvironmentTRUSTEES FOR…Southeast Alaska Conservation Council Inc-SEACC — $220,000 · EnvironmentSoutheast Al…ESSEX COUNTY GREENBELT ASSOCIATION — $200,000 · EnvironmentESSEX COUNTY…ALASKA CONSERVATION FOUNDATION — $190,000 · EnvironmentALASKA CONSE…+9 more — $300,000 · Environment+9 moreMASSACHUSETTS PARENTS UNITED INC — $675,000 · Community ImprovementMASSACHUS…THE BOTTOM LINE INC — $645,000 · Community ImprovementTHE BOTTO…JUST-A-START CORPORATION — $515,000 · Community ImprovementJUST-A-ST…JAMAICA PLAIN NEIGHBORHOOD DEVELOPMENT CORPORATION — $255,000 · Community ImprovementJAMAICA P…+1 more — $55,000 · Community ImprovementNATIONAL PARENTS UNION INC — $450,000 · Human ServicesSAINT FRANCIS HOUSE INC — $285,000 · Human ServicesRESPOND Inc — $130,000 · Human ServicesWELLSPRING HOUSE INC — $120,000 · Human ServicesHOUSEHOLD GOODS INC — $115,000 · Human ServicesBANGOR YOUNG MEN'S CHRISTIAN ASSOCIATION — $70,000 · Human ServicesMission of Deeds Inc — $65,000 · Human ServicesRIAN IMMIGRANT CENTER INC — $60,000 · Human ServicesINTERFAITH SOCIAL SERVICES INC — $53,000 · Human Services+10 more — $220,000 · Human ServicesVOLUNTEER LAWYERS PROJECT OF THE BOSTON BAR ASSOCIATION INC — $860,000 · Crime & LegalDISMAS HOUSE OF MASSACHUSETTS INC — $220,000 · Crime & LegalLAWYERS CLEARINGHOUSE ON AFFORDABLE HOUSING AND HOMELESSNESS INC — $180,000 · Crime & Legal+2 more — $30,000 · Crime & LegalFOOD LINK INC — $200,000 · Food & NutritionBOSTON AREA GLEANERS INC — $170,000 · Food & NutritionLocker Project — $80,000 · Food & NutritionROOT NS INC — $40,000 · Food & NutritionBREAD & ROSES INC — $30,000 · Food & NutritionFOOD FOR FREE COMMITTEE INC — $20,000 · Food & Nutrition+1 more — $15,000 · Food & Nutrition
Other$11,055,000Education$5,517,500Environment$2,645,000Community Improvement$2,145,000Human Services$1,568,000Crime & Legal$1,290,000Food & Nutrition$555,000

Showing your 200 largest grantees by grant value.

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetMASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION INC — $1,732,000 over 9y, 8.1% of budgetGREATER BOSTON LEGAL SERVICES INC — $1,025,000 over 9y, 0.6% of budgetCONSERVATION LAW FOUNDATION INC — $1,025,000 over 9y, 0.9% of budgetVOLUNTEER LAWYERS PROJECT OF THE BOSTON BAR ASSOCIATION INC — $860,000 over 9y, 3.9% of budgetMASSACHUSETTS PARENTS UNITED INC — $675,000 over 5y, 52% of budgetTHE BOTTOM LINE INC — $645,000 over 9y, 0.6% of budgetJUST-A-START CORPORATION — $515,000 over 9y, 0.9% of budgetSITKA CONSERVATION SOCIETY — $480,000 over 9y, 6.5% of budgetNATIONAL PARENTS UNION INC — $450,000 over 3y, 5.5% of budgetNational Education Opportunity Network Inc — $450,000 over 3y, 4.9% of budgetBlessed Stephen Bellesini OSA Academy Inc — $410,000 over 9y, 4.3% of budgetJFYNETWORKS A NONPROFIT CORPORATION — $310,000 over 9y, 3.6% of budgetFISHTANK LEARNING INC — $300,000 over 3y, 5.5% of budgetSAINT FRANCIS HOUSE INC — $285,000 over 9y, 0.2% of budgetJAMAICA PLAIN NEIGHBORHOOD DEVELOPMENT CORPORATION — $255,000 over 9y, 0.4% of budgetCASA PROJECT INC — $235,000 over 8y, 3.3% of budgetNOTRE DAME CRISTO REY HIGH SCHOOL INC — $235,000 over 8y, 0.9% of budgetTRUSTEES FOR ALASKA — $230,000 over 9y, 2.1% of budgetDISMAS HOUSE OF MASSACHUSETTS INC — $220,000 over 9y, 2.9% of budgetSoutheast Alaska Conservation Council Inc-SEACC — $220,000 over 8y, 3.4% of budgetKIPP MASSACHUSETTS INC — $215,000 over 7y, 4.1% of budgetMETROWEST LEGAL SERVICES INC — $210,000 over 8y, 1.0% of budgetTHE NEIGHBORHOOD DEVELOPERS INC — $205,000 over 6y, 0.6% of budgetESSEX COUNTY GREENBELT ASSOCIATION — $200,000 over 8y, 0.7% of budgetFOOD LINK INC — $200,000 over 8y, 2.6% of budgetTHE MATCH FOUNDATION INC — $200,000 over 3y, 3.3% of budgetALASKA CONSERVATION FOUNDATION — $190,000 over 4y, 2.0% of budgetYOUTH DEVELOPMENT ORGANIZATION INC — $185,000 over 8y, 3.5% of budgetLAWYERS CLEARINGHOUSE ON AFFORDABLE HOUSING AND HOMELESSNESS INC — $180,000 over 9y, 4.0% of budgetLA VIDA INC — $175,000 over 6y, 6.1% of budgetBOSTON AREA GLEANERS INC — $170,000 over 6y, 0.9% of budgetVETERANS LEGAL SERVICES INC — $165,000 over 8y, 2.1% of budgetCONSERVATORY LAB FOUNDATION INC — $160,000 over 6y, 2.2% of budgetTHRIVE SCHOLARS — $150,000 over 8y, 0.2% of budgetUP EDUCATION NETWORK — $150,000 over 3y, 1.0% of budgetDE NOVO CENTER FOR JUSTICE AND HEALING — $150,000 over 4y, 2.2% of budgetALMA DEL MAR FOUNDATION INC — $150,000 over 3y, 1.5% of budgetMORE THAN WORDS INC — $140,000 over 7y, 0.4% of budgetSTEPPINGSTONE FOUNDATION INC — $135,000 over 7y, 0.3% of budgetRESPOND Inc — $130,000 over 9y, 1.0% of budgetUTEC Inc — $125,000 over 8y, 0.3% of budgetLAZARUS HOUSE INC — $125,000 over 8y, 0.3% of budgetWELLSPRING HOUSE INC — $120,000 over 8y, 0.7% of budgetBOSTON DEBATE LEAGUE INCORPORATED — $120,000 over 8y, 0.8% of budgetTUTORING PLUS OF CAMBRIDGE INC — $115,000 over 8y, 5.4% of budgetHOUSEHOLD GOODS INC — $115,000 over 9y, 0.4% of budgetFRIENDS OF SPRINGFIELD PREPARATORY CHARTER SCHOOL INC — $100,000 over 2y, 6.6% of budgetLEAP for Education Inc — $95,000 over 5y, 2.1% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

  • Who funds MASSACHUSETTS CHARTER PUBLIC SCHOOL ASSOCIATION INC ↗
  • Who funds GREATER BOSTON LEGAL SERVICES INC ↗
  • Who funds CONSERVATION LAW FOUNDATION INC ↗
  • Who funds VOLUNTEER LAWYERS PROJECT OF THE BOSTON BAR ASSOCIATION INC ↗
  • Who funds MASSACHUSETTS PARENTS UNITED INC ↗
  • Who funds THE BOTTOM LINE INC ↗
  • Who funds JUST-A-START CORPORATION ↗
  • Who funds SITKA CONSERVATION SOCIETY ↗
  • Who funds NATIONAL PARENTS UNION INC ↗
  • Who funds National Education Opportunity Network Inc ↗
  • Who funds Blessed Stephen Bellesini OSA Academy Inc ↗
  • Who funds JFYNETWORKS A NONPROFIT CORPORATION ↗
  • Who funds FISHTANK LEARNING INC ↗
  • Who funds SAINT FRANCIS HOUSE INC ↗
  • Who funds JAMAICA PLAIN NEIGHBORHOOD DEVELOPMENT CORPORATION ↗
  • Who funds CASA PROJECT INC ↗
  • Who funds NOTRE DAME CRISTO REY HIGH SCHOOL INC ↗
  • Who funds TRUSTEES FOR ALASKA ↗
  • Who funds DISMAS HOUSE OF MASSACHUSETTS INC ↗
  • Who funds Southeast Alaska Conservation Council Inc-SEACC ↗
  • Who funds KIPP MASSACHUSETTS INC ↗
  • Who funds METROWEST LEGAL SERVICES INC ↗
  • Who funds THE NEIGHBORHOOD DEVELOPERS INC ↗
  • Who funds ESSEX COUNTY GREENBELT ASSOCIATION ↗
  • Who funds FOOD LINK INC ↗
  • Who funds THE MATCH FOUNDATION INC ↗
  • Who funds ALASKA CONSERVATION FOUNDATION ↗
  • Who funds YOUTH DEVELOPMENT ORGANIZATION INC ↗
  • Who funds LAWYERS CLEARINGHOUSE ON AFFORDABLE HOUSING AND HOMELESSNESS INC ↗
  • Who funds LA VIDA INC ↗

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

Cummings Foundation G…Eastern Bank Foundati…Boston Foundation IncBushrod H Campbell & …Liberty Mutual Founda…Rockland Trust Charit…The Cabot Family Char…Amelia Peabody Founda…United Way Of Massach…Agnes M Lindsay TrustRiley Mabel Louise Tr…Cambridge Savings Cha…
Cummings Foundation Grants Inc (Fka Oneworld Boston Inc)MA105.1× affinity57 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Cummings Foundation Grants Inc (Fka Oneworld Boston Inc) · Eastern Bank Foundation · Boston Foundation Inc · Bushrod H Campbell & Adah F Hall Charity Fund · Liberty Mutual Foundation Inc · Rockland Trust Charitable Foundation Inc · The Cabot Family Charitable Trust · Amelia Peabody Foundation · United Way Of Massachusetts Bay Inc · Agnes M Lindsay Trust · Riley Mabel Louise Tr Uwill · Cambridge Savings Charitable Foundation Inc

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization George H & Jane a Mifflin Memorial Fund funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 340%4%15%34%60%your share of their income ↑0%25%50%75%100%share of the org’s income from government →median 9%
  • New England Forestry Foundation Inc — 88% of income from government
  • Respond Inc — 80% of income from government
  • Elizabeth Freeman Center Inc — 76% of income from government
  • Worcester Youth Center Inc — 64% of income from government
  • Plummer Youth Promise Inc — 64% of income from government
  • Reach Beyond Domestic Violence Inc — 53% of income from government
  • The Hyde Square Task Force Inc — 52% of income from government
  • Utec Inc — 46% of income from government
  • Mujeres Unidas Avanzando Inc — 44% of income from government
  • Straight Ahead Ministries Inc — 27% of income from government
  • Root Ns Inc — 26% of income from government
  • More Than Words Inc — 24% of income from government
  • Father Bill's & Mainspring Inc — 24% of income from government
  • Uncornered Inc — 24% of income from government
  • Up Education Network — 22% of income from government
  • HomeStart Inc — 20% of income from government
  • Boston Casa Inc — 20% of income from government
  • Boston Area Gleaners Inc — 20% of income from government
  • Saint Francis House Inc — 18% of income from government
  • Just-a-Start Corporation — 16% of income from government
  • Veterans Legal Services Inc — 16% of income from government
  • Massachusetts Charter Public School Association Inc — 15% of income from government
  • Sociedad Latina Inc — 15% of income from government
  • Lynn Shelter Association Inc — 12% of income from government
  • English for New Bostonians Inc — 11% of income from government
  • La Vida Inc — 11% of income from government
  • Community Day Care Center of Lawrence Inc — 11% of income from government
  • Project Citizenship Inc — 10% of income from government
  • Silver Lining Mentoring Inc — 10% of income from government
  • Metrowest Legal Services Inc — 10% of income from government
  • De Novo Center for Justice and Healing — 9% of income from government
  • Leap for Education Inc — 9% of income from government
  • Food Link Inc — 9% of income from government
  • East Quabbin Land Trust Inc — 9% of income from government
  • Jamaica Plain Neighborhood Development Corporation — 9% of income from government
  • Wellspring House Inc — 9% of income from government
  • Women's Lunch Place Inc — 8% of income from government
  • Essex County Greenbelt Association — 8% of income from government
  • Refugee & Immigrant Assistance Center — 8% of income from government
  • Boston Debate League Incorporated — 7% of income from government
  • School On Wheels of Massachusetts Inc — 7% of income from government
  • Raw Art Works Inc — 7% of income from government
  • Northeastern University — 7% of income from government
  • Steps to Success Inc — 5% of income from government
  • Coaching for Change Inc — 5% of income from government
  • Project Learn Inc — 5% of income from government
  • Zumix Inc — 5% of income from government
  • Evkids Inc — 4% of income from government
  • Youth Development Organization Inc — 4% of income from government
  • New Life Furniture Bank of Ma Inc — 4% of income from government
  • The Neighborhood Developers Inc — 3% of income from government
  • Greater Boston Legal Services Inc — 3% of income from government
  • Food for Free Committee Inc — 3% of income from government
  • Riverfront Recapture Inc — 2% of income from government
  • Breakthrough Greater Boston Inc — 2% of income from government
  • Speak for the Trees Inc — 2% of income from government
  • Amazing Grace of Cape Cod Inc — 1% of income from government
  • Conservatory Lab Foundation Inc — 1% of income from government
  • Mass Insight Education and Research Institute Inc — 1% of income from government
  • Women's Money Matters Inc — 1% of income from government
  • Lazarus House Inc — 1% of income from government
  • The Bottom Line Inc — 0% of income from government
  • Project Just Because Inc — 0% of income from government
  • Steppingstone Foundation Inc — 0% of income from government
no gov moneyreceives it· size = income
34get no government money at all
23report government grants on their 990 we could not trace to a source (not plotted)
7rely on government for over half their income
typical government reliance, FY20–25

Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to George H & Jane a Mifflin Memorial Fund?

Find your warmest path to George H & Jane a Mifflin Memorial Fund through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 218 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home