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California · Nonprofit

OLAF WIEGHORST MUSEUM FOUNDATION

OLAF WIEGHORST MUSEUM FOUNDATION (California) receives grants from 1 organization whose IRS filings report $40,000 to it, the largest being ORANGE COUNTY COMMUNITY FOUNDATION ($40,000). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.

Revenue FY2024
$45k
Funders on record
1
Grants received
$40k
Net assets
$1.3M
1/1 repeat funderspeak grant-dependency 21%
01What it does

What Olaf Wieghorst Museum Foundation does

Mission

The organization consists of paintings sculptures botanical garden and antique artifacts. All artifacts have a western theme that meets our purpose of preserving and promoting the heritage of the american west.

As stated on its FY2024 Form 990.

Programs

  1. The olaf wighorst museum foundation operates in el cajon california to preserve the art and heritage of the american west. The museums three largest program services categorized by their allocated espenses focus on public education historical preservation and community arts. Museum operations gallery exhibits and facility maintenance - the primary expenditures focus on operation and maintenance of a 3,300 square foot museum in which other program services can be provided to the public. Key items include insurance utilities repairs and upkeep. It manages the day-to-day operations to ensure a safe climate-controlled environment for visitors and the art collection.

    $29,291 spent
    100% of program spending

  2. Public education and outreach - the foundation provides ongoing public access to the artists original work featuring a main gallery visiting artists exhibits and rotating displays of 19th-century western frontier art. Docent led tours and presentations are supported with written material on a variety of topics relating to local history and the american west.

    $0 spent
    0% of program spending

  3. Historic preservation - the museum maintains olaf wieghorsts original home disignated a historic landmark by the city of el cajon and a botanical garden meant to enhance the visitor experience by replicating the atmosphere of a southwest desert environment. It preserves a large collection of original wieghorst art and memorabilia dating to the early 1900s.

    $0 spent
    0% of program spending

  4. Other program services, not described on the e-filed return.

    $0 spent
    0% of program spending

The 4 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $29,291.

02The organization over time

The organization over time

Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 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.

100 = 20172017 Revenue 100 ($94k) Expenses 100 ($95k) Net assets 100 ($1.2M)2018 Revenue 71 ($67k) Expenses 67 ($64k) Net assets 100 ($1.2M)2019 Revenue 57 ($54k) Expenses 40 ($38k) Net assets 104 ($1.3M)2020 Revenue 42 ($39k) Expenses 37 ($35k) Net assets 104 ($1.3M)2021 Revenue 29 ($27k) Expenses 43 ($41k) Net assets 103 ($1.3M)2022 Revenue 51 ($48k) Expenses 33 ($31k) Net assets 103 ($1.2M)2023 Revenue 39 ($36k) Expenses 36 ($34k) Net assets 104 ($1.3M)2024 Revenue 48 ($45k) Expenses 41 ($39k) Net assets 105 ($1.3M)
'17'18'19'20'21'22'23'24
Revenue (48)Expenses (41)Net assets (105)Peer revenue range

Balance sheet

Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2018 to 2019, from $1.2M to $1.3M (+4%).

$1.2M
$1.2M
$1.3M
$1.3M
$1.3M
$1.2M
$1.3M
$1.3M
'17'18'19'20'21'22'23'24
Total assetsTotal liabilities

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.

2017
2018
2019
2020
2021
2022
2023
2024
ContributionsProgram revenueInvestmentOther

82% of OLAF WIEGHORST MUSEUM FOUNDATION’s revenue is contributions — more donation-reliant than the typical peer (78% for the typical peer).

This organization
Typical peer · 18,808 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 reported years ran a deficit.

−$1k
’17
$3k
’18
$16k
’19
$4k
’20
−$14k
’21
$17k
’22
$2k
’23
$6k
’24
21
months of
reserve

Leadership and staff

The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.

'17'18'19'20'21'22'23'24
Listed171616106555
Joined·+0+0+1+1+0+0+0
No longer listed·1075100
03Who funds it

Who funds it, year by year

2017 → 2022: the base held at 1 funder, grant income held at $10k.

Funder
'17
'18
'22
'25*
total
funders
1
1
1
1

1 of 1 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% 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 OLAF WIEGHORST MUSEUM FOUNDATION’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.

Where its funders are

100% of OLAF WIEGHORST MUSEUM FOUNDATION's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Too little is directly attributable to place on a map.

Funder states come from each funder’s own filing. $40k 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.

04Its place in the field

Against its field

OLAF WIEGHORST MUSEUM FOUNDATION runs a healthier operating margin than half of the 14,550 arts & culture nonprofits its size.

Operating margin14% · above the median
Months of reserve20.5mo · above the median
Revenue growth (annualized)−10% · below the median

this organization peer median middle 50% of peers· 14,550 arts & culture nonprofits under $100k, FY2024

Organizations like OLAF WIEGHORST MUSEUM FOUNDATION

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 California

Noah Purifoy Foundation78%San Luis Obispo Museum of Art78%California Oil Museum Foundation77%Sam and Alfreda Maloof Foundation For Arts and Crafts77%Jonathan Art Foundation76%Museum of Northern California Art76%Triton Museum of Art76%Rancho Los Alamitos Foundation76%

Nationally

National Cowboy and Western Heritage Museum78%Museum of the Old West78%Wharton Esherick Museum78%Noah Purifoy Foundation78%San Luis Obispo Museum of Art78%Washington County Museum of Fine Arts78%El Paso Museum of Art Foundation77%The Wheelwright Museum of the American Indian77%
05Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Where the money goes

57% of spending goes to programs.

Program 57%Management 16%Fundraising 27%

Governance

5
board members
100%
independent
✓Conflict-of-interest policy✓Whistleblower policy✓Document retention✓Board reviewed the 990–Audited financials

Public support

93%

Share of support from the public (Schedule A) — the basis for its public-charity status.

Footprint & structure

Files a return copy in 1 state

CA

Screen this organization

A dated, signed PDF of the compliance screen for OLAF WIEGHORST MUSEUM FOUNDATION: 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.

A paid feature, included from the $75 plan up. Sign in to download.

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 OLAF WIEGHORST MUSEUM FOUNDATION?
OLAF WIEGHORST MUSEUM FOUNDATION (California) receives grants from 1 organization whose IRS filings report $40,000 to it, the largest being ORANGE COUNTY COMMUNITY FOUNDATION ($40,000). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
How many funders does OLAF WIEGHORST MUSEUM FOUNDATION have?
IRS filings report 1 organization giving $40,000 in grants to OLAF WIEGHORST MUSEUM FOUNDATION, 1 of which have funded it in more than one year.
Who is the largest funder of OLAF WIEGHORST MUSEUM FOUNDATION?
ORANGE COUNTY COMMUNITY FOUNDATION is the largest funder on record, with $40,000 in grants. The full list of funders is on this page.
How can an organization like OLAF WIEGHORST MUSEUM FOUNDATION find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Olaf Wieghorst Museum →

These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 1 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