· Private foundation
William P & Gertrude Schweitzer
Its FY2025 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: 49% of WILLIAM P & GERTRUDE SCHWEITZER’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 · FY2025
- Under $10k7 grants · $20k
- $10k–50k3 grants · $70k
- $50k–250k1 grant · $70k
| Recipient | Amount |
|---|---|
| MUSEUM OF NATURAL HISTORY | $70,000 |
| METROPOLITAN MUSEUM OF ART | $30,000 |
| CARNEGIE HALL SOCIETY | $30,000 |
| THE RAPTOR TRUST | $10,000 |
| DANNYS AND DONS RESCUE | $6,290 |
| FRIENDS OF WHITTEMORE | $5,000 |
| HARLEYS DREAM | $3,000 |
| ST HUBERTS ANIMAL WELFARE CENTER | $2,210 |
| NJ CONSERVATION FOUNDATION | $1,500 |
| SHAKESPEARE THEATRE OF NJ | $1,000 |
| CORNELL LAB OR ORINTHOLOGY | $1,000 |
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.
Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 16%, against an area that typically sits at 8%. 90% of your 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 +32% for the ones you funded once.
19 repeat relationships — 5 still active in FY2025, 14 since wound down; 6 grantees were first funded in FY2025 (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 FY2025, 29% of grant dollars renewed an existing relationship; $113k 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
- DRDANNY & RONS RESCUE7× · 2017–2023 · $81k · revenue +287%
- WCWildlife Conservation Society6× · 2017–2022 · $62k · revenue +59%
- TCTHE CARNEGIE HALL CORPORATION2× · 2017–2019 · $50k · revenue +176%
Funded once
- DADANNY AND RON RESCUEone grant, 2024 · $57k
- AMAMER MUSEUM OF NAT HISTORYone grant, 2024 · $35k
- ACAMER COMM FOR WEITZMAN INS OF SCIENone grant, 2024 · $20k
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.
World animal protection is a global organization working to end factory farming and wildlife exploitation. we expose cruel systems, promote animal-friendly alternatives, and influence policy change. for over 75 years, we've been rewriting…
HUMANE WORLD FOR ANIMALS INTERNATIONAL, FKA HUMANE SOCIETY INTERNATIONAL (HSI), works around the globe to promote the human-animal bond, rescue and protect dogs and cats, improve farm animal welfare, protect wildlife, promote animal-free…
Founded in 1877, american humane association, dba american humane society (american humane) is committed to ensuring the safety, welfare and well-being of animals. our leadership programs are first to serve in promoting and nurturing the…
For Education, Safety, Protection, Recovery, and Prevention From Cruelty for All Cetaceans Especially Dolphins
The aspca's mission, as stated by founder henry bergh in 1866, is "to provide effective means for the prevention of cruelty to animals throughout the united states." the aspca was founded on the belief that animals are entitled to kind and…
To prevent cruelty to animals, we promote enacting and enforcing good public policies. enacting good laws depends upon electing good lawmakers, and we remind voters which candidates care about and support animal issues.
For reference, the grantee most central to the portfolio’s shape is The Seeing Eye Inc and the most unlike its peers is Aiken Horse Park Foundation. 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 43 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 4% lost their exemption, against 10% 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.
23 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. 23 of the 43 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 American Museum of Natural History ↗
- Who funds The Carnegie Hall Society Inc ↗
- Who funds NEW JERSEY CONSERVATION FOUNDATION ↗
- Who funds DANNY & RONS RESCUE ↗
- Who funds Wildlife Conservation Society ↗
- Who funds THE CARNEGIE HALL CORPORATION ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
- Who funds THE RAPTOR TRUST ↗
- Who funds SCARSDALE VOLUNTEER AMBULANCE CORPS INC ↗
- Who funds Harleys Dream ↗
- Who funds Global Impact ↗
- Who funds BUFFALO THERAPEUTIC RIDING CENTER INC ↗
- Who funds BEST FRIENDS ANIMAL SOCIETY ↗
- Who funds OMEGA HORSE RESCUE AND REHABILITATION CENTER INC ↗
- Who funds THE SEEING EYE INC ↗
- Who funds UPPERVILLE COLT & HORSE SHOW INC ↗
- Who funds Washington International Horse Show ↗
- Who funds FRIENDS OF WHITTEMORE INC ↗
- Who funds AIKEN HORSE PARK FOUNDATION ↗
- Who funds MYLESTONE EQUINE RESCUE ↗
- Who funds HACKENSACK RIVERKEEPER INC ↗
- Who funds NORTH SHORE ANIMAL LEAGUE AMERICA 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: National Philanthropic Trust · Paypal Charitable Giving Fund · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
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 P & Gertrude Schweitzer 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.
- Mane Stream Inc — 1% of income from government
- Hackensack Riverkeeper Inc — 0% 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.