SAN MATEO COUNTY HISTORICAL ASSOCIATION

EIN 23-7186194 REDWOOD CITY, CA

Revenue 2023: $5,302,375
Expenses 2023: $1,836,511

Program services were 83.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection: 03
Classification: 2000
Street: 2200 BROADWAY ST

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2023

Mission

THE ASSOCIATION'S COLLECTIONS ARE MADE UP OF OBJECTS THAT ARE HELD FOR EXHIBITION AND VARIOUS OTHER PROGRAM ACTIVITIES. EACH OF THESE ITEMS IS CATALOGED, PRESERVED, AND CARED FOR AND ACTIVITIES VERIFYING THEIR EXISTENCE AND ASSESSING THEIR CONDITION ARE PERFORMED CONTINUOUSLY. COLLECTION ITEMS ACQUIRED EITHER THROUGH PURCHASES OR DONATION ARE NOT CAPITALIZED. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN NET ASSETS WITHOUT DONOR RESTRICTIONS IF PURCHASED WITH ASSETS WITHOUT RESTRICTIONS AND AS A DECREASE IN NET ASSETS WITH DONOR RESTRICTIONS IF PURCHASED WITH DONOR-RESTRICTED ASSETS. CONTRIBUTIONS OF COLLECTION ITEMS ARE NOT RECOGNIZED IN THE STATEMENT OF ACTIVITIES. THE ASSOCIATION'S INSURANCE POLICY OF MUSEUM COLLECTIONS EXPIRED IN NOVEMBER 1995. THE BOARD OF DIRECTORS HAS DETERMINED THAT IT IS NOT FEASIBLE TO OBTAIN SIMILAR COVERAGE ON THE COLLECTIONS DUE TO THE HIGH PREMIUM COST.

THE ORGANIZATION'S COLLECTIONS INCLUDE HISTORICAL DATA, INFORMATION, RELICS, OBJECTS AND RECORDS OF HISTORICAL INTEREST RELATING TO SAN MATEO COUNTY.

Expenses $1,529,798 · Revenue $112,233

As filed on the 2023 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2023

As listed in Part VII of the 2023 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

John La TorraJOHN LA TORRA

CHAIRMAN

Total calculated

$0

Hours/week

1
Tracy DeleuwTRACY DELEUW

VICE CHAIR

Total calculated

$0

Hours/week

1
Dee EvaDEE EVA

SECRETARY

Total calculated

$0

Hours/week

1
Christine WilliamsCHRISTINE WILLIAMS

TREASURER

Total calculated

$0

Hours/week

1
Jennifer AchesonJENNIFER ACHESON

DIRECTOR

Total calculated

$0

Hours/week

1
Thomas AmesTHOMAS AMES

DIRECTOR

Total calculated

$0

Hours/week

1
Keith BautistaKEITH BAUTISTA

DIRECTOR

Total calculated

$0

Hours/week

1
Sandra McLellan BehlingSANDRA MCLELLAN BEHLING

DIRECTOR

Total calculated

$0

Hours/week

1
John BlakeJOHN BLAKE

DIRECTOR

Total calculated

$0

Hours/week

1
Joe CarcioneJOE CARCIONE

DIRECTOR

Total calculated

$0

Hours/week

1
Bill ChiangBILL CHIANG

DIRECTOR

Total calculated

$0

Hours/week

1
Chonita E ClearyCHONITA E CLEARY

DIRECTOR

Total calculated

$0

Hours/week

1
Donna ColsonDONNA COLSON

DIRECTOR

Total calculated

$0

Hours/week

1
Shawn DelunaSHAWN DELUNA

DIRECTOR

Total calculated

$0

Hours/week

1
Greg GalliGREG GALLI

DIRECTOR

Total calculated

$0

Hours/week

1
Don HorsleyDON HORSLEY

DIRECTOR

Total calculated

$0

Hours/week

1
Ray IversonRAY IVERSON

DIRECTOR

Total calculated

$0

Hours/week

1
Wally JansenWALLY JANSEN

DIRECTOR

Total calculated

$0

Hours/week

1
Kathy KopfKATHY KOPF

DIRECTOR

Total calculated

$0

Hours/week

1
Susan Kay LangSUSAN KAY LANG

DIRECTOR

Total calculated

$0

Hours/week

1
Olivia Garcia Martinez EdDOLIVIA GARCIA MARTINEZ EDD

DIRECTOR

Total calculated

$0

Hours/week

1
Rick MayersonRICK MAYERSON

DIRECTOR

Total calculated

$0

Hours/week

1
Bill NicoletBILL NICOLET

DIRECTOR

Total calculated

$0

Hours/week

1
Mike O'NeillMIKE O'NEILL

DIRECTOR

Total calculated

$0

Hours/week

1
Barbara PierceBARBARA PIERCE

DIRECTOR

Total calculated

$0

Hours/week

1

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

2023

Revenue

$5,302,375

Expenses

$1,836,511

Contributions

$4,760,997

Grants paid

$0
2022

Revenue

$2,411,954

Expenses

$1,894,504

Contributions

$2,205,465

Grants paid

$0

Tax year	Revenue	Expenses	Contributions	Grants paid
2023	$5,302,375	$1,836,511	$4,760,997	$0
2022	$2,411,954	$1,894,504	$2,205,465	$0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

2021 · 990

Revenue

$5,785,075

Expenses

$1,895,623

Assets (EOY)

$20,041,393
2020 · 990

Revenue

$2,189,539

Expenses

$1,913,383

Assets (EOY)

$17,041,726
2019 · 990

Revenue

$4,694,240

Expenses

$2,023,005

Assets (EOY)

$15,699,283
2018 · 990

Revenue

$2,075,192

Expenses

$1,843,862

Assets (EOY)

$12,919,564
2017 · 990

Revenue

$1,934,827

Expenses

$1,830,282

Assets (EOY)

$12,676,282
2016 · 990

Revenue

$2,367,554

Expenses

$1,975,323

Assets (EOY)

$12,741,216
2015 · 990

Revenue

$1,439,109

Expenses

$1,562,386

Assets (EOY)

$12,285,805
2014 · 990

Revenue

$1,396,275

Expenses

$1,468,058

Assets (EOY)

$12,540,046
2012 · 990

Revenue

not reported

Expenses

$1,454,052

Assets (EOY)

$10,767,155
2011 · 990

Revenue

not reported

Expenses

$1,519,024

Assets (EOY)

$10,516,517

Tax year	Form	Revenue	Expenses	Assets (EOY)
2021	990	$5,785,075	$1,895,623	$20,041,393
2020	990	$2,189,539	$1,913,383	$17,041,726
2019	990	$4,694,240	$2,023,005	$15,699,283
2018	990	$2,075,192	$1,843,862	$12,919,564
2017	990	$1,934,827	$1,830,282	$12,676,282
2016	990	$2,367,554	$1,975,323	$12,741,216
2015	990	$1,439,109	$1,562,386	$12,285,805
2014	990	$1,396,275	$1,468,058	$12,540,046
2012	990	not reported	$1,454,052	$10,767,155
2011	990	not reported	$1,519,024	$10,516,517

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

$2,000,000

2023 CONSTRUCTION SUPPORT
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

$2,000,000

2024 CONSTRUCTION SUPPORT
DONOR ADVISED CHARITABLE GIVING

$464,705

2024 ARTS, CULTURE & HUMANITIES
DONOR ADVISED CHARITABLE GIVING

$53,665

2023 ARTS, CULTURE & HUMANITIES
CYPRESS LAWN CEMETERY ASSOCIATION

$30,000

2022 GENERAL SUPPORT
GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC

$28,000

2024 ARTS AND CULTURE
SILICON VALLEY COMMUNITY FOUNDATION

$27,750

2023 Arts & Culture
CYPRESS LAWN CEMETERY ASSOCIATION

$25,500

2023 GENERAL SUPPORT
TIDES FOUNDATION

$25,000

2022 HEALTHY INDIVIDUALS AND COMMUNITIES
SILICON VALLEY COMMUNITY FOUNDATION

$24,050

2022 Arts & Culture

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 29 October 2026, for every organization at once. Returns through tax year 2023, the newest we have parsed for this organization.