· Private foundation
The Walbridge Fund
Its FY2021 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 42% of THE WALBRIDGE FUND’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2021
- Under $10k5 grants · $25k
- $10k–50k10 grants · $100k
- $250k+2 grants · $1.3M
| Recipient | Amount |
|---|---|
| THORNE BUILDING COMMUNITY CENTER | $750,000 |
| GLYNWOOD CENTER | $500,000 |
| ADIRONDACK EXPERIENCE | $10,000 |
| PARKS & TRAILS NEW YORK | $10,000 |
| DARROW SCHOOL | $10,000 |
| ENVIRONMENTAL ADVOCATES | $10,000 |
| PRINCETON-BLAIRSTOWN CENTER | $10,000 |
| ADIRONDACK EXPLORER | $10,000 |
| ADIRONDACK LAND TRUST | $10,000 |
| NEW YORK LEAGUE OF CONSERVATION VOTERS | $10,000 |
| ADIRONDACK COUNCIL | $10,000 |
| THE NATURE CONSERVANCY ADIRONDACK CHPTR | $10,000 |
| ARC OF WESTCHESTER | $5,000 |
| ADIRONDACK PARK INSTITUTE | $5,000 |
| LITERACY SOLUTIONS NY | $5,000 |
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.
Your human-services grants (FY17–21, $1.5M) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 59% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
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
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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +44% since the first grant, against +5% for the ones you funded once.
97 repeat relationships — 12 still active in FY2021, 85 since wound down; 5 grantees were first funded in FY2021 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2021, 43% of grant dollars renewed an existing relationship; $785k went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- SHScenic Hudson Inc4× · 2017–2020 · $6.0M · revenue +86%
INTERNATIONAL CRANE FOUNDATION INC4× · 2017–2020 · $5.4M · revenue +2%- TGTHE GRAND CANYON TRUST INC4× · 2017–2020 · $3.3M · revenue +123%
Funded once
- FCFOUR CORNERS SCHOOL OF OUTDOOR EDUCone grant, 2017 · $500k · revenue -76% · 45% of their budget
- TNTHE NATURE CONSERVANCY ASIA-PACIFICone grant, 2017 · $500k
- RWRIVERSEDGE WESTgraduatedone grant, 2017 · $300k · revenue +33%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
Adk is the only non-profit organization in new york state dedicated to the conservation, preservation, and responsible recreational use of the new york state forest preserve and other parks, wild lands, and waters vital to our members and…
The central new york land trust seeks to preserve and protect natural areas in order to provide our communities clean water, clean air, wildlife habitat, and a chance to connect with the land.
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
Zoo new york, by example and action, provides knowledge and motivation for conserving nature in new york state through science-based natural and cultural experiences.
To educate the community as to the significance of their architectural and historic heritage through the preservation, protection, improvement, and restoration of sites and buildings in western new york that are of historic or civic…
Eastern national promotes the public's understanding and support of america's national parks and other public trust partners by providing quality educational experiences, products and services.
Overview - founded in boston by pioneering landscape architect and open space visionary charles eliot in 1891, the trustees is the nation's first and the commonwealth's largest conservation and preservation nonprofit.
The wildlands trust works throughout southeastern massachusetts to conserve and permanently protect native habitats, farmland, and lands of high ecologic and scenic value that serve to keep our communities healthy and our residents…
The mission of the new canaan land trust is to foster a connection between the new canaan community and its natural resources through the conservation and sustainable stewardship of our open space.
To cultivate and develop an expansive collection of trees, gardens, and plants for all to explore, enjoy and study; and to provide through education and stewardship, a greener, healthier, more beautiful environment.
See schedule onylcvef's mission is to educate, engage and empower new yorkers to be effective advocates on behalf of the environment from clean energy and funding for parks, to solid waste and green buildings. first, we educate new yorkers…
For reference, the grantee most central to the portfolio’s shape is New York League of Conservation Voters and the most unlike its peers is Isaac H Tuttle Fund. 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.
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 42 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 1% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 1% lost their exemption, against 13% of the field you don’t fund.
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.
73 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. 73 of the 118 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.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 THE NATURE CONSERVANCY ↗
- Who funds Scenic Hudson Inc ↗
- Who funds INTERNATIONAL CRANE FOUNDATION INC ↗
- Who funds THE GRAND CANYON TRUST INC ↗
- Who funds THE WILDERNESS SOCIETY ↗
- Who funds THE TRUST FOR PUBLIC LAND ↗
- Who funds BERKSHIRE TACONIC COMMUNITY FOUNDATION INC ↗
- Who funds GLYNWOOD CENTER INC ↗
- Who funds DUTCHESS LAND CONSERVANCY INC ↗
- Who funds MISS HALL'S SCHOOL INC ↗
- Who funds MILLBROOK SCHOOL ↗
- Who funds FRIENDS OF TRACY AVIARY ↗
- Who funds UTAH OPEN LANDS CONSERVATION ASSOCIATION INC ↗
- Who funds Ronald McDonald House Charities of the Intermountain Area Inc ↗
- Who funds MILLBROOK COMMUNITY PARTNERSHIP INC ↗
- Who funds Sageland Collaborative ↗
- Who funds DUTCHESS DAY SCHOOL ↗
- Who funds PINE PLAINS MEMORIAL HALL INC ↗
- Who funds WAVE HILL INCORPORATED ↗
- Who funds COLORADO OUTWARD BOUND SCHOOL ↗
- Who funds FOUR CORNERS SCHOOL OF OUTDOOR EDUC ↗
- Who funds UTAH RIVERS COUNCIL INC ↗
- Who funds HAWKWATCH INTERNATIONAL INC ↗
- Who funds RIVERSEDGE WEST ↗
- Who funds ENGENDERHEALTH INC ↗
- Who funds MILLBROOK LIBRARY ↗
- Who funds LUMEN PRODUCTIONS INC ↗
- Who funds MATTHEW 25 FARM 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.
Open a dossier: Palladium Foundation · Berkshire Taconic Community Foundation Inc · The New York Community Trust · My Good Fund · Cloudsplitter Foundation · The Jm Kaplan Fund Inc · Boquet Foundation Inc · Overhills Foundation · The Goldman Sachs Charitable Gift Fund · The Community Foundation of Utah · The Nature Conservancy · Patagoniaorg
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 The Walbridge 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 or a single department — and drag the year to watch it move.
- Marthas Vineyard Center for Living Inc — 40% of income from government
- The Trustees of Princeton University — 11% of income from government
- Hospice of Martha's Vineyard Inc Dba Hospice and Palliative Care of Martha's — 5% of income from government
- Martha's Vineyard Preservation Trust Inc — 4% of income from government
- Berkshire Taconic Community Foundation Inc — 2% of income from government
- Martha's Vineyard Playhouse Inc — 2% of income from government
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.
Warm introductions · Powered by PlinthPlus
How do I get to The Walbridge Fund?
Find your warmest path to The Walbridge 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.