Arizona · Nonprofit
SUNNYSLOPE HISTORICAL SOCIETY
SUNNYSLOPE HISTORICAL SOCIETY (Arizona) receives grants from 2 organizations whose IRS filings report $7,528 to it, the largest being ARIZONA HUMANITIES COUNCIL INC ($7,302). 1 of them have funded it in more than one year.
- Revenue FY2025
- $38k
- Funders on record
- 2
- Grants received
- $8k
- Net assets
- $177k
What Sunnyslope Historical Society does
Mission
To preserve the past of the Sunnyslope community for its future through researching, collecting, preserving, and sharing the history of this community. Promote community safety and identity and to promote community involvement. To educate the community about the rich history of the people and land surrounding it.
As stated on its FY2025 Form 990-EZ.
Programs
The mission of the Sunnyslope Historical Society is to promote, encourage and foster research on the history of Sunnyslope and to collect, preserve, disseminate materials, and information related to the history of Sunnyslope. It is also to raise funds for any of the foregoing objectives and accept donations, gifts, legacies and bequests. The organization was open to the public to tour the museum exhibits and to educate the public and promote Sunnyslope and Phoenix area history. We received 691 visitors to our campus and hosted 46 events at our museum
$220 spent12% of program spendingCommunity outreach. The organization participated or held 46 community events, including blood drives, Phoenix G.A.I.N. events, community clean-ups and promoting local events held by Block Watches and other community organizations. We distributed handouts and flyers for community events and to promote safety and community involvement.
$1,547 spent85% of program spendingArchiving and preserving artifacts pertaining to the history of Sunnyslope. The organization has 2 buildings that we maintain and give tours of them. We maintain an archive of numerous photographs, textiles and items of historical significance to the Sunnyslope and Phoenix community. These materials are used for exhibits and to help the public with inquiries about their history in the community.
$53 spent3% of program spending
The 3 programs described on its FY2025 Form 990-EZ. Program spending in total: $1,820.
The organization over time
Each line starts at 100 in 2018, so what you read is the shape rather than the size: 150 means half as much again as 2018, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $217k to $177k (−19%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 6 of the last 8 reported years ran a deficit.
Who funds it, year by year
2020 → 2023: the base narrowed from 2 funders to 1 funder, grant income fell $7k → $43.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 3% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of SUNNYSLOPE HISTORICAL SOCIETY’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
SUNNYSLOPE HISTORICAL SOCIETY leans on a few funders — its largest provides 97% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund SUNNYSLOPE HISTORICAL SOCIETY.
Largest funder’s share by year: 2020 99% · 2021 100% · 2022 100% · 2023 100% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
100% of SUNNYSLOPE HISTORICAL SOCIETY's grant income comes from Arizona funders.
Funder states come from each funder’s own filing. $226 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like SUNNYSLOPE HISTORICAL SOCIETY
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Arizona
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
99%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for SUNNYSLOPE HISTORICAL SOCIETY: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds SUNNYSLOPE HISTORICAL SOCIETY?
- SUNNYSLOPE HISTORICAL SOCIETY (Arizona) receives grants from 2 organizations whose IRS filings report $7,528 to it, the largest being ARIZONA HUMANITIES COUNCIL INC ($7,302). 1 of them have funded it in more than one year.
- How many funders does SUNNYSLOPE HISTORICAL SOCIETY have?
- IRS filings report 2 organizations giving $7,528 in grants to SUNNYSLOPE HISTORICAL SOCIETY, 1 of which have funded it in more than one year.
- Who is the largest funder of SUNNYSLOPE HISTORICAL SOCIETY?
- ARIZONA HUMANITIES COUNCIL INC is the largest funder on record, with $7,302 in grants. The full list of funders is on this page.
- How can an organization like SUNNYSLOPE HISTORICAL SOCIETY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Arizona. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Sunnyslope Historical Society →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2018–2025), and the filings of 2 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing