· Private foundation
William B Dietrich Foundation
Its FY2024 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- $10k–50k2 grants · $20k
- $50k–250k2 grants · $295k
- $250k+6 grants · $2.9M
| Recipient | Amount |
|---|---|
| FRIENDS OF LAUREL HILL & WEST LAUREL HILL CEMETERIES | $1,160,000 |
| THE FRANKLIN INSTITUTE | $500,000 |
| MORRIS ARBORETUM OF THE UNIVERSITY OF PENNSYLVANIA | $340,000 |
| PHILADELPHIA SOCIETY FOR THE PRESERVATION OF LANDMARKS | $330,000 |
| WILLIAMSON COLLEGE OF THE TRADES | $270,000 |
| TOWNSHIP OF LOWER MERION | $255,000 |
| US SQUASH RACQUETS ASSOCIATION INC | $240,000 |
| SAINT MARK'S CHURCH | $54,700 |
| NEW HORIZONS SENIOR CENTER | $10,000 |
| SURREY SERVICES FOR SENIORS | $10,000 |
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 (FY17–24, $80k) land where the poverty rate runs at 6%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 8% of William B Dietrich Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 98% of the giving stays in PA; read by stated purpose it is 86% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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 +10% since the first grant, against 0% for the ones you funded once.
19 repeat relationships — 4 still active in FY2024, 15 since wound down; 5 grantees were first funded in FY2024 (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 FY2024, 12% of grant dollars renewed an existing relationship; $2.5M 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
- PMPHILADELPHIA MUSEUM OF ART4× · 2017–2020 · $1.6M · revenue +14%
- DUDREXEL UNIVERSITY3× · 2017–2020 · $1.3M · revenue +10%
- SCSPRINGSIDE CHESTNUT HILL ACADEMY3× · 2018–2022 · $500k · revenue +34%
Funded once
- TATHE ATHENAEUM OF PHILADELPHIAone grant, 2021 · $1.3M · revenue 0% · 49% of their budget
- CICURTIS INSTITUTE OF MUSICone grant, 2022 · $745k · revenue -28%
- WVWEST VINCENT TOWNSHIPone grant, 2021 · $686k
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 phillips collection is the oldest museum of modern and contemporary art in the u.s. in addition to presentation of works from the permanent collection and special exhibitions, the museum maintains active educational, academic,…
The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
The academy operates a post-secondary educational program in fine arts as well as a gallery collection of american art. in addition, the academy sponsors fine arts classes for all ages and free arts programs.
The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.
As a diverse community of learners, we cultivate integrity, curiosity, connection and resilience.
Nmoa mission statement is: we welcome everyone with inclusive experiences that spark curiosity and foster community.
Bard college seeks to provide a challenging academic program and a supportive environment that fosters a collaborative interchange of ideas in the classroom as well as ambition to achieve excellence.
The baltimore museum of art connects art to baltimore and baltimore to the world, embodying a commitment to artistic excellence and social equity in every decision from art presentation, interpretation, and collecting, to the composition…
For reference, the grantee most central to the portfolio’s shape is Historical Society of Pennsylvania and the most unlike its peers is Drexel University. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 80 years old; the field is 15. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 4% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 15% 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.
27 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. 27 of the 44 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 PHILADELPHIA MUSEUM OF ART ↗
- Who funds THE ATHENAEUM OF PHILADELPHIA ↗
- Who funds DREXEL UNIVERSITY ↗
- Who funds Historical Society of Pennsylvania ↗
- Who funds FRIENDS OF LAUREL HILL AND WEST LAUREL HILL CEMETERIES ↗
- Who funds THE BARNES FOUNDATION ↗
- Who funds FREE LIBRARY OF PHILADELPHIA FOUNDATION ↗
- Who funds CURTIS INSTITUTE OF MUSIC ↗
- Who funds TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA ↗
- Who funds THE UNIVERSITY OF THE ARTS ↗
- Who funds WILLIAMSON COLLEGE OF THE TRADES ↗
- Who funds THE FRANKLIN INSTITUTE ↗
- Who funds SPRINGSIDE CHESTNUT HILL ACADEMY ↗
- Who funds WOODMERE ART MUSEUM ↗
- Who funds BRINTON ASSOCIATION OF AMERICA INC ↗
- Who funds PHILA SOCIETY FOR THE PRESERVATION OF LANDMARKS ↗
- Who funds GIRARD COLLEGE FOUNDATION ↗
- Who funds VANGUARD CHARITABLE ENDOWMENT PROGRAM ↗
- Who funds THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA ↗
- Who funds FAIRMOUNT PARK CONSERVANCY ↗
- Who funds FUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPT OF STATE ↗
- Who funds WOOD NAOMI UW ↗
- Who funds SURREY SERVICES FOR SENIORS INC ↗
- Who funds THREEFOLD EDUCATION ASSOCIATION INC ↗
- Who funds PERFORMANCE GARAGE 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: The William Penn Foundation · The Philadelphia Foundation · Hamilton Family Foundation · The Philadelphia Cultural Fund Inc · Lindback Cr & Mf Foundation Tw Main · Henry Dolfinger 2 Trust Uw · Chubb Charitable Foundation · Connelly Foundation · Howard J Sedran Family Foundation · The 1830 Family Foundation 2138-00-42 · United Way of Greater Philadelphia and Southern New Jersey · Vanguard Charitable Endowment Program
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 William B Dietrich Foundation 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.
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 William B Dietrich Foundation?
Find your warmest path to William B Dietrich Foundation 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.