Minnesota · Nonprofit
ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY
ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY (Minnesota) receives grants from 3 organizations whose IRS filings report $20,880 to it, the largest being GREAT LAKES FOUNDATION ($20,000). 2 of them have funded it in more than one year.
Against its field
ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY has grown faster than half of the 9,650 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 9,650 arts & culture nonprofits under $100k, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Dwight and Linda Davis Foundationshared funders
- The William G Pomeroy Foundationportfolio match
- New Hampshire Preservation Allianceportfolio match
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
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.
97% of ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY’s revenue is contributions — more donation-reliant than the typical peer (78% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 7 reported years ran a deficit.
Who funds it, year by year
2019 → 2023: the base held at 1 funder, grant income fell $10k → $28.
1 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 1% 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 ROCK OF AGES LIGHTHOUSE PRESERVATION 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
ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY leans on a few funders — its largest provides 96% 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
96% 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 ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY.
Largest funder’s share by year: 2019 100% · 2020 100% · 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
ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY draws 96% of its grant income from funders outside Minnesota, across 2 states in all.
Funder states come from each funder’s own filing. $130 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.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- Dwight and Linda Davis Foundationshared fundersWI · backs 3 organizations that share your funders
- The William G Pomeroy Foundationportfolio matchits grantees resemble your mission
- New Hampshire Preservation Allianceportfolio matchits grantees resemble your mission
- Heritage Harbor Foundationportfolio matchits grantees resemble your mission
- Parks & Trails New York Incportfolio matchits grantees resemble your mission
- Co Tua Marion S Covington Fdnportfolio matchits grantees resemble your mission
- Susan & George Craig Family Foundation Incportfolio matchits grantees resemble your mission
- Florida Humanities Council Incportfolio matchits grantees resemble your mission
- Historic House Trust of New York City Incportfolio matchits grantees resemble your mission
- National Trust for Historic Preservation in the United Statesportfolio matchits grantees resemble your mission
- Greater Hudson Heritage Networkportfolio matchits grantees resemble your mission
- 1772 Foundation Incportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Minnesota
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
54%
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 ROCK OF AGES LIGHTHOUSE PRESERVATION 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY?
- ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY (Minnesota) receives grants from 3 organizations whose IRS filings report $20,880 to it, the largest being GREAT LAKES FOUNDATION ($20,000). 2 of them have funded it in more than one year.
- How many funders does ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY have?
- IRS filings report 3 organizations giving $20,880 in grants to ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY, 2 of which have funded it in more than one year.
- Who is the largest funder of ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY?
- GREAT LAKES FOUNDATION is the largest funder on record, with $20,000 in grants. The full list of funders is on this page.
- How can an organization like ROCK OF AGES LIGHTHOUSE PRESERVATION SOCIETY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Minnesota. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 3funders 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 August 27, 2026. What this page cannot tell you · view filing