· Private foundation
The Arthur F and Isadora Dellheim Foundation Inc
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: 41% of THE ARTHUR F AND ISADORA DELLHEIM FOUNDATION INC’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 $10k27 grants · $34k
- $10k–50k2 grants · $25k
| Recipient | Amount |
|---|---|
| JOHNS HOPKINS UNIVERSITY | $12,500 |
| BALTIMORE CHORAL ARTS | $12,500 |
| BALTIMORE SYMPHONY ORCHESTRA | $6,000 |
| Individual grant recipient | $6,000 |
| WALTERS ART MUSEUM | $6,000 |
| SHRIVER HALL CONCERT SERIES | $3,560 |
| Individual grant recipient | $3,000 |
| METROPOLITAN OPERA GUILD | $1,680 |
| JEWISH MUSEUM OF MARYLAND | $1,000 |
| WEIZMANN INSTITUTE OF SCIENCE | $1,000 |
| J STREET EDUCATION FUND INC | $1,000 |
| KENNEDY KRIEGER INSTITUTE | $500 |
| MORGAN LIBRARY MANHATTAN | $500 |
| MAZON | $500 |
| SMITHSONIAN INSTITUTION | $500 |
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 10%. 89% 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.
61 repeat relationships — 21 still active in FY2025, 40 since wound down; 8 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, 87% of grant dollars renewed an existing relationship; $7k 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
JOHNS HOPKINS UNIVERSITY9× · 2017–2025 · $123k · revenue +64%- BSBALTIMORE SYMPHONY ORCHESTRA INC8× · 2017–2025 · $33k · revenue +68%
- SHSHRIVER HALL CONCERT SERIES INC7× · 2018–2025 · $22k · revenue +57%
Funded once
- BCBALTIMORE CHORAL ARTS SOCIETY INCgraduatedone grant, 2018 · $5k · revenue +60%
- HSHAR SINAI - OHEB SHALOM CONGREGATION INCone grant, 2023 · $3k
- JSJAMES SMITHSON SOCIETYone grant, 2018 · $3k
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 mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
The Academy's mission is to enhance member career fulfillment and promote brain health for all.
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
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."
For reference, the grantee most central to the portfolio’s shape is March of Dimes Inc and the most unlike its peers is Mica Inc. 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 58 years old; the field is 14. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 2% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 14% 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.
44 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. 44 of the 95 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 JOHNS HOPKINS UNIVERSITY ↗
- Who funds BALTIMORE SYMPHONY ORCHESTRA INC ↗
- Who funds SHRIVER HALL CONCERT SERIES INC ↗
- Who funds BALTIMORE MUSEUM OF ART ↗
- Who funds The Metropolitan Opera Guild Inc ↗
- Who funds J STREET EDUCATION FUND INC ↗
- Who funds MAZON A Jewish Response to Hunger ↗
- Who funds ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds The United States Holocaust Memorial Museum ↗
- Who funds BALTIMORE CHORAL ARTS SOCIETY INC ↗
- Who funds JEWISH MUSEUM OF MARYLAND INC ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
- Who funds THE VALLEYS PLANNING COUNCIL INC ↗
- Who funds SOUTHERN POVERTY LAW CENTER INC ↗
- Who funds OUTSIDE IN PRODUCTIONS ↗
- Who funds ST JOHN'S COLLEGE ↗
- Who funds HIAS INC ↗
- Who funds AMERICAN COMMITTEE FOR THE WEIZMANN INSTITUTE OF SCIENCE 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: Baltimore Community Foundation Inc · T Rowe Price Program for Charitable Giving Inc · Eliasberg Family Foundation Inc · The William G Baker Jr Memorial Fund · Associated Jewish Charities of Baltimore · Peggy & Yale Gordon Charitable Trust · The John J Leidy Foundation Inc · Hecht-Levi Foundation Inc · The Rothschild Charitable Foundation Inc · Alvin and Louise Myerberg Family Foundation · The Henry and Ruth Blaustein Rosenberg Foundation Inc · Dr Frank C Marino 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 The Arthur F and Isadora Dellheim Foundation Inc 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.
- Hias Inc — 88% of income from government
- Johns Hopkins University — 12% of income from government
- The Maryland Food Bank Inc — 11% of income from government
- Baltimore Symphony Orchestra Inc — 11% of income from government
- Shriver Hall Concert Series Inc — 9% of income from government
- Baltimore Museum of Art — 4% of income from government
- Chesapeake Bay Foundation Inc — 2% of income from government
- Jewish Museum of Maryland Inc — 2% of income from government
- St John's College — 2% of income from government
- Goucher College — 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.