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SOCIETY FOR THE PRESERVATION OF LONG ISLAND ANTIQUITIES

COLD SPRING HARBOR, NY · EIN 111667763 · Form 990 · FY2024 · NTEE A800 · Arts, Culture & Humanities · Medium ($1M-$10M) · preservationlongisland.org
revenue
$1.2M
expenses
$1.6M
net assets
$17.9M
employees
15
volunteers
25
program ratio
72%
mission · from form 990

PRESERVATION LONG ISLAND'S MISSION IS TO CELEBRATE AND PRESERVE LONG ISLAND'S DIVERSE CULTURAL AND ARCHITECTURAL HERITAGE THROUGH ADVOCACY, EDUCATION AND STEWARDSHIP OF HISTORIC SITES AND COLLECTIONS. THIS YEAR REFLECTS BOTH DEEP ENGAGEMENT AND STEADY UPWARD MOMENTUM THAT IS CARRYING US FORWARD INTO EXCITING NEW PROJECTS IN MANY AREAS INCLUDING PRESERVATION, EXHIBITIONS, EDUCATION, CURATORIAL AND CAPITAL PROJECTS.

profile · synthesized from sources

Preservation Long Island advocates for the protection of Long Island's cultural and architectural heritage through education, advocacy, and stewardship of historic sites and collections. The organization offers technical assistance to communities and property owners, operates historic house museums, and produces exhibitions and publications on regional history. It serves as a resource for preservation policy, local landmark laws, and historic tax credit programs across Long Island.

irs program accomplishments · form 990 part iii · fy2024

What they reported doing

  1. #1 primary $86K
    PLI PROVIDES EDUCATIONAL AND ADVISORY SERVICES TO HELP LOCAL GROUPS ADVANCE PRESERVATION ADVOCACY INITIATIVES IN THEIR OWN COMMUNITIES. PLI HELD ITS PRESERVATION AWARDS CEREMONY ON JANUARY 25, 2025 IN THE HEADQUARTERS EXHIBITION GALLERY. THE AWARDS FOR PROJECT EXCELLANCE WERE AWARDS TO: (1)THE SAFINA CENTER, A NONPROFIT NATURE CONSERVATION AND ENVIRONMENTAL ADVOCACY ORGANIZATION, FOR ITS RESTORATION OF THE HAWKINS- ELZON HOUSE WITHIN THE OLD SETAUKET HISTORIC DISTRICT;(2) ANTHONY MARTIGNETTI, FOR HIS RESTORATION OF THE MATTITUCK CREEK TIDE MILL; AND (3) THE CHURCH, A PUBLIC ARTS SPACE IN SAG HARBOR, THANKS TO THE LEADERSHIP OF ARTISTS, APRIL GORNIK AND ERIC FISCHL, ARCHITECT LEE SKOLNICK, AND LANDSCAPE ARCHITECT EDMUND HOLLANDER. THE PRESERVATION AWARD FOR ORGANIZATIONAL EXCELLANCE WENT TO SUFFOLK COUNTY FOR THEIR WORK PRESERVING OWL HILL. THE HOWARD C. SHERWOOD AWARD WAS POSTHUMOUSLY AWARD TO BRIAN PINNOLA FOR HIS LIFETIME ACHIEVEMENT IN HISTORIC PRESERVATION. JUNE 2025 BENEFIT WE HELD OUR JUNE 2025 BENEFIT AT "COCUYO," A BEAUTIFUL HARRIE T. LINDEBERG HOUSE THAT WAS BUILT FOR F. EDWIN CHURCH AND IS NOW OWNED AND WAS METICULOUSLY RESTORED BY TRUSTEE ALFREDO PAREDES AND BRAD GOLDFARB. PLI PRESENTED MESSRS. PAREDES AND GOLDFARB WITH A PLAQUE IN RECOGNITION OF THEIR "OUTSTANDING PRESERVATION EXCELLENCE." THE EXTRAORDINARY GENEROSITY AT THIS EVENT SET A NEW FUNDRAISING RECORD FOR PLI BENEFITS AND GREATLY EXPANDED OUR CIRCLE OF SUPPORTERS. EXHIBITIONS IN EXHIBITIONS, OUR NEWEST EXHIBITION, MAKING A NAME FOR HIMSELF: THE LIFE AND ART OF F. EDWIN CHURCH, OPENED ON SEPTEMBER 18, 2025 TO GREAT PRESS COVERAGE AND STRONG VISITATION. BY HIGHLIGHTING CHURCH'S WORK AND HIS CONTRIBUTIONS TO THE LOCAL COMMUNITY, WE HOPE VISITORS WILL GAIN A RENEWED APPRECIATION FOR THE NORTH SHORE'S CULTURAL AND ARTISTIC HERITAGE AT THE TURN OF THE LAST CENTURY. THIS EXHIBITION WILL REMAIN ON DISPLAY IN OUR GALLERY UNTIL DECEMBER 21, 2025. PROMOTING LONG ISLAND: THE ART OF EDWARD LANGE, 1870-1880 WAS ON DISPLAY IN THE GALLERY FROM AUGUST 16 TO DECEMBER 1, 2024 AND WELCOMED 1760 VISITORS. THIS EXHIBITION DREW THE LARGEST NUMBER OF VISITORS TO PLI SINCE 2017. THE ACTIVITIES SURROUNDING EDWARD LANGE INCLUDED A BOOK LAUNCH PARTY HELD AT THE LOWNDES HOUSE IN NORTHPORT AND A CURATOR TOUR OF THE EXHIBITION LED BY FORMER CURATORIAL FELLOW PETER FEDORYK AND CHIEF CURATOR LAUREN BRINCAT. ALSO, THE BOOK RECEIVED THE 2025 GREATER HUDSON HERITAGE NETWORK AWARD FOR EXCELLENCE. EDUCATION AND ENGAGEMENT PLI HOSTED ITS FIRST EVER JUNETEENTH POETRY CELEBRATION AT JOSEPH LLOYD MANOR IN PARTNERSHIP WITH THE CARIBBEAN AMERICAN POETRY ASSOCIATION. THE EVENT FEATURED ORIGINAL POETRY WRITTEN BY YASMIN MORAIS, KEISHA-GAYE ANDERSON, AND LINDAMICHELLE BARON, AS WELL AS THE NEXT GENERATION OF STUDENT POETS FROM LONG ISLAND, INCLUDING THE NASSAU COUNTY TEEN POET LAUREATE AND SUFFOLK COUNTY TEEN POET LAUREATE. MARGARET SULLIVAN SPEAKER SERIES THANKS TO GENEROUS SUPPORT FROM THE MARGARET SULLIVAN FUND, WE HAVE CREATED AN EXCITING, VIBRANT SPEAKER SERIES AIMED AT INCREASING OUR AUDIENCE AND FILLING AN EVER-INCREASING DEMAND FOR ADULT EDUCATION. LECTURES INCLUDE: - JAKE GORST DISCUSSES ANDREW GELLER: DECONSTRUCTED. - BLACK POETRY DAY: JAMES G. BASKER DISCUSSES THE BLACK PRESENCE IN THE FOUNDING ERA. - ARCHITECT SAM WHITE DISCUSSES THE ARCHITECT AS CLIENT: SANFORD WHITE AT "BOX HILL." ON JANUARY 24, 2025 AT CHRISTIE'S AMERICANA SALE, PLI SUCCESSFULLY ACQUIRED A MAGNIFICENT PAINTING OF EPHRAIM NILES BYRAM (1809-1881) BY ORLANDO HAND BEARS. EPHRAIM BYRAM WAS AN ASTRONOMER, CLOCKMAKER, WOODWORKER, BOOKBINDER, NATURALIST, PHILOSOPHER, HORTICULTURALIST, AND MECHANIC, AND THIS PORTRAIT PRESENTS PLI WITH SIGNIFICANT EDUCATIONAL AND INTERPRETIVE OPPORTUNITIES AT THE CUSTOM HOUSE IN SAG HARBOR, AS WELL AS IN OUR EXHIBITION GALLERY. MORE DETAILS TO COME.
  2. #2 $146K
    PLI MAINTAINS AND INTERPRETS REPRESENTATIVE COLLECTIONS OF FURNITURE AND DECORATIVE ARTS, PERIOD PHOTOGRAPHS AND PAINTINGS, EVERY-DAY HOUSEHOLD OBJECTS AND VARIOUS ARCHIVAL MATERIALS FOR RESEARCH, EDUCATIONAL, AND EXHIBITION PURPOSES. TO SHOWCASE THESE COLLECTIONS WHILE ADVANCING THE VALUE OF PRESERVING MATERIAL CULTURE, PLI CREATES EXHIBITIONS AND PUBLICATIONS THAT RELATE TO LONG ISLAND HISTORY. DURING THE FISCAL YEAR, PLI HELD ITS EARLY LONG ISLAND FURNITURE SYMPOSIIUM ON SEPTEMEBER 8, 2025 WHICH WAS A SOLD-OUT, STANDING ROOM ONLY EVENT. MUSEUM PROFESSIONALS AND FURNITURE ENTHUSIASTS FROM ALL OVER LONG ISLAND AND BEYOND ATTENDED THE DAY-LONG PROGRAM WHICH EXPLORED A RANGE OF TOPICS CONNECTED TO THE STUDY, RESEARCH, CONNOISSEURSHIP, INTERPRETATION AND CARE OF EARLY LONG ISLAND AND AMERICAN FURNITURE. PROMOTING LONG ISLAND: THE ART OF EDWARD LANGE, 1870-1880 WAS ON DISPLAY IN THE GALLERY FROM AUGUST 16 TO DECEMBER 1, 2024 AND WELCOMED 1760 VISITORS. THIS EXHIBITION DREW THE LARGEST NUMBER OF VISITORS TO PLI SINCE 2017. THE ACTIVITIES SURROUNDING EDWARD LANGE INCLUDED A BOOK LAUNCH PARTY HELD AT THE LOWNDES HOUSE IN NORTHPORT AND A CURATOR TOUR OF THE EXHIBITION LED BY FORMER CURATORIAL FELLOW PETER FEDORYK AND CHIEF CURATOR LAUREN BRINCAT. ALSO, THE BOOK RECEIVED THE 2025 GREATER HUDSON HERITAGE NETWORK AWARD FOR EXCELLENCE. ON JANUARY 24, 2025 AT CHRISTIE'S AMERICANA SALE, PLI SUCCESSFULLY ACQUIRED A MAGNIFICENT PAINTING OF EPHRAIM NILES BYRAM (1809-1881) BY ORLANDO HAND BEARS. EPHRAIM BYRAM WAS AN ASTRONOMER, CLOCKMAKER, WOODWORKER, BOOKBINDER, NATURALIST, PHILOSOPHER, HORTICULTURALIST, AND MECHANIC, AND THIS PORTRAIT PRESENTS PLI WITH SIGNIFICANT EDUCATIONAL AND INTERPRETIVE OPPORTUNITIES AT THE CUSTOM HOUSE IN SAG HARBOR, AS WELL AS IN OUR EXHIBITION GALLERY.
named programs · 5 · from sources

What they call their work

Advisory Support & Technical Services
Provides one-on-one consultations, letters to officials, and presentations to help communities and property owners advance preservation initiatives. Includes guidance on local landmark laws, tax credits, and rehabilitation standards.
Exhibitions and Publications
Produces exhibitions such as 'Making a Name for Himself: The Life and Art of F. Edwin Church' and 'Wood and Water: Furniture on Long Island, 1660–1860', along with catalogs and research publications on regional history and material culture.
Historic Property Tours
Seasonal public tours of Joseph Lloyd Manor, Sherwood-Jayne Farm, Custom House, and Old Methodist Church Exhibition Gallery, offering educational access to Long Island’s architectural heritage.
Local Landmark Law Locator
An online map tool that helps users identify whether a municipality has a local landmark law, access the relevant codes, and contact local preservation officials in Nassau and Suffolk Counties.
Preservation Awards Program
Recognizes excellence in preservation projects and organizational leadership, including the annual Preservation Awards and the posthumous Howard C. Sherwood Award for lifetime achievement.
activities · 9 groups

What they do

  • Local History Preservation and Education 2 activities
    • Interpret historic sites and collections through education and public programs
      Interprets historic sites such as the Custom House and Sherwood-Jayne Farm, collects art and material culture related to Long Island history, and creates educational content including multimedia, films, and virtual roundtables. Programs include a short film on Jupiter Hammon and virtual public roundtables exploring slavery on Long Island.
    • Produce and distribute educational content through digital platforms
      Maintains a blog titled "Preservation Long Island: Everything Worth Celebrating," publishes multimedia content on its Vimeo channel, and produces digital exhibitions and discussion materials to engage the public with Long Island’s architectural and cultural heritage.
  • Guided Historic Site Tours 2 activities
    • Operate historic sites with seasonal and year-round public access
      Manages and offers public access to historic properties including Joseph Lloyd Manor, Sherwood-Jayne Farm, and the Custom House, with seasonal house tours from June through October and year-round access to grounds and nature trails. The grounds and a three-mile nature trail at Sherwood-Jayne Farm are open daily from dawn to dusk.
    • Provide fee-based private and group tours at historic sites
      Offers private and group tours at Sherwood-Jayne Farm and the Custom House for a fee, with rates set at $12 per person and a $120 minimum charge, supporting public engagement and educational outreach.
  • Historic Site Designation Advocacy 1 activity
    • Document and promote local historic preservation laws
      Developed an online map application to help the public explore local landmark laws in Nassau and Suffolk Counties and documents that 37 of 109 local governments in the region have adopted historic preservation ordinances.
  • Curated Art Exhibitions and Public Displays 1 activity
    • Host exhibitions and curator-led programs at exhibition gallery
      Operates an exhibition gallery in the repurposed Old Methodist Church in Cold Spring Harbor, hosting rotating exhibitions such as "Making a Name for Himself: The Life and Art of F. Edwin Church" and "Promoting Long Island: The Art of Edward Lange," along with curator-led tours and special events. The gallery also served as an inaugural New York site for a Smithsonian traveling exhibition.
  • Historic Site Public Programming 1 activity
    • Organize public engagement events and historical initiatives
      Hosts public events such as the Early Long Island Furniture Symposium, benefit events at historic properties like the Harrie T. Lindeberg house, and participates in the Long Island History Hunt Selfie Challenge to encourage public interaction with historic sites through photo submissions and prize incentives.
  • Local History Publishing 1 activity
    • Produce and publish scholarly research and publications on Long Island heritage
      Produces and distributes reports, studies, catalogs, and monographs focused on Long Island’s cultural heritage, including architecture, decorative arts, and historical figures. Notable publications include "The Collected Works of Jupiter Hammon" and exhibition catalogs such as Wood and Water: Furniture on Long Island, 1660–1860.
  • Historic Building Restoration and Preservation 1 activity
    • Provide preservation consultations and technical assistance
      Offers preservation consultations and direct technical support to historic property owners, businesses, nonprofits, and municipalities across Long Island, aiding in the stewardship and interpretation of historic resources.
  • Professional Excellence Awards Programs 1 activity
    • Recognize excellence in historic preservation through awards programs
      Presents annual and biennial Preservation Awards, including the Howard C. Sherwood Award for lifetime achievement and the Huyler C. Held Award for excellence in publication, to honor individuals, organizations, and projects. Events include the 2025 ceremony recognizing the Safina Center, Anthony Martignetti, and Brian Pinnola posthumously.
  • Artist Legacy Preservation and Documentation 1 activity
    • Steward and expand historic collections through acquisitions and inventories
      Acquires significant artifacts and artworks, such as a painting by Orlando Hand Bears at Christie's, and conducts comprehensive inventory reconciliations across all properties and storage facilities to ensure accurate stewardship of historic materials.
financials · form 990 · fy2024
revenue
Total revenue$1.20M
Contributions & grants$673K56%
Program service revenue$39K3%
Investment income$413K34%
Other revenue$75K
expenses
Total expenses$1.62M
Program expenses72%
Admin / overhead24%
Fundraising3%
Salaries & benefits$705K
Grants paid out$0
Largest expense lineCompensation
balance sheet
Total assets$18.06M
Cash$178K
Investments$14.47M
Liabilities$123K
Net assets$17.94M
Liquid reserves108.7 mo
6 years on record · 2019–2024 · YoY revenue +39.4%
leadership · form 990 part vii · fy2024

Who runs it

paid leadership · 1
NameTitleHours/wkCompensation
MS JACKIE POWERS EXECUTIVE DI 40 $64K
board members · 16
  • MR DANIEL WARD WHITE — TRUSTEE
  • MR EDWARD DUGGER — TRUSTEE
  • MR PAUL BENTEL — TRUSTEE
  • MR RICHARD MAC DOUGALL — TRUSTEE
  • MR ROBERT KISSAM — TRUSTEE
  • MR TOWNSEND U WEEKES — TRUSTEE
  • MR WILLIS DELACOUR — TRUSTEE
  • MS CAROLINE ROB ZALESKI — TRUSTEE
  • MS DIAHN MC GRATH — TRUSTEE
  • MS EUGENIE SIBEUD — TRUSTEE
  • MS JOANNA BADAMI — TRUSTEE
  • MS LISA EASTMAN — TRUSTEE
  • MS MAURA BRUSH — TRUSTEE
  • MS MELISA ROUSSEAU — TRUSTEE
  • MS MELISSA PEARSALL HIRSH — TRUSTEE
  • MS PIA CRARY — TRUSTEE
relationships · 22

Who they work with

  • Custom House Partner — Site for seasonal public tours and location for seasonal Museum Attendant positions.
  • DeLaCour Family Foundation Funder — Funder of the Jupiter Hammon Project
  • Greater Hudson Heritage Network (GHHN) Partner — Partners by directing constituents to the Conservation Treatment Grant Program jointly offered by NYSCA and GHHN.
  • Jackie Killian Funder — Funder of the Jupiter Hammon Project
  • Jackie Powers Partner — Contact person for sponsorship inquiries at Preservation Long Island.
  • Joseph Lloyd Manor Partner — Site for seasonal public tours and educational programming.
  • Lloyd Harbor Historical Society Funder — Funder of the Jupiter Hammon Project
  • NYS Office of Parks, Recreation and Historic Preservation Government — Collaborates with state agencies by referring constituents to historic preservation grant programs and technical resources.
  • National Trust for Historic Preservation Partner — References publications and resources from the National Trust for Historic Preservation, such as guidance on new construction in historic districts.
  • New York State Council on the Arts Funder — Provides partial funding for Preservation Long Island's Advocacy Programs.
  • New York State Council on the Arts (NYSCA) Partner — Refers constituents to NYSCA grant programs, including the Conservation Treatment Grant Program administered with Greater Hudson Heritage Network.
  • Old Methodist Church Partner — Houses the Exhibition Gallery for public exhibitions.
  • Old Sagg-Harbour Committee Partner — Relocated the Custom House in 1948 to prevent its demolition, prior to Preservation Long Island's acquisition.
  • Preservation League of NYS Partner — Collaborates by directing constituents to grant and tax credit resources offered by the Preservation League of NYS.
  • Preservation Long Island Network — Rebranded from Society for the Preservation of Long Island Antiquities in 2017 to better reflect its mission.
  • Robert David Lion Gardiner Foundation Partner — Directs constituents to grant opportunities offered by the Robert David Lion Gardiner Foundation for Long Island preservation projects.
  • Sherwood-Jayne Farm Partner — Participating site in the Long Island History Hunt Selfie Challenge and location for seasonal public tours.
  • Smithsonian Partner — Hosted the inaugural New York site for a Smithsonian traveling exhibition, co-displaying SPLIA’s collection items.
  • Suffolk County Government — Awarded the Preservation Award for Organizational Excellence for its work preserving Owl Hill.
  • Suffolk County Government — Co-manages nature trail access on parkland adjacent to Sherwood-Jayne Farm.
  • The Safina Center Partner — Recognized for restoration work on the Hawkins-Elzon House within the Old Setauket Historic District.
  • William G. Pomeroy Foundation Partner — Directs constituents to history grant opportunities offered by the William G. Pomeroy Foundation.
strategies · 2

How they approach the work

Named approaches extracted from this org’s sources. Where others share an approach, follow it to see the full set of orgs running it.

  • Equitable and Inclusive Historic Interpretation
    methodology: equitable-historic-interpretation
    By centering marginalized voices—particularly enslaved people of African descent—in the interpretation of historic sites, the organization fosters more authentic and socially relevant narratives, because inclusive storytelling increases public resonance and promotes justice in heritage representation.
  • Integration of Advocacy, Education, and Stewardship
    methodology: advocacy-education-stewardship integration
    By combining advocacy, education, and stewardship into a unified approach, the organization raises public awareness and drives support for cultural heritage preservation, because multi-pronged engagement strengthens community buy-in and long-term sustainability of preservation efforts.