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July 2026 General Meeting

Thursday, July 16, 2026

7:30 pm @ Swezey-Avey House


Guest Speaker: Robert Von Bernewitz, Local Historian

Topic: “Benjamin Tallmadge and the Tallmadge Trail”


Discover the Revolutionary History of Long Island!


Join us for a presentation on Benjamin Tallmadge and the Tallmadge Trail and learn the story of one of the American Revolution’s heroes. As General George Washington’s chief intelligence officer and leader of the famed Culper Spy Ring, Tallmadge played a vital role in securing American independence.


The presentation will explore Tallmadge’s life and his daring 1780 raid across Long Island, including the capture of a British fort in Mastic and the destruction of a large stockpile of hay in Coram that was destined to feed British cavalry horses.



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Please click here for our 250th Anniversary celebration events.


It is the Society’s mission to collect, preserve and interpret the history of Yaphank and its surrounding area.



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Make a Donation. Help us continue bringing events, exhibits, and educational programs to the community.


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Volunteer. The Society needs people to help with our many projects, events and activities. No matter what your interest or skill, we have a role for you. If you would like to become a docent training is available.


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The Robert David Lion Gardiner Foundation


Special Thanks for the many generous grants. View the most recent award for the restoration of the Hawkins Family Cemetery.


View here





Thanks to The Suffolk County Department of Parks, Division of Historic Services, which manages over 200 historic structures containing an array of buildings, gardens and sites of cultural and historical significance.


The Swezey Family


Visit the Swezey family exhibit in the Swezey-Avey House. The Swezey family arrived in Southold in the mid-1600s and in Yaphank in the 1700s. Come learn about the family’s lives into the 20th century. To visit, call (631) 775-0735 to make an appointment or email us at info@yaphankhistorical.org 

to make an appointment.


The Weeks Family Legacy


Yaphank’s most important family, the Weeks, settled in Millville (now Yaphank) in 1828. Portraitist William Sydney Mount was commissioned to paint James Huggins Weeks and his wife Susan Maria, in 1838. See this permanent exhibit at the Swezey-Avey House.


Our Library Collection, searchable by author, title, subject, and date, and our Archives with online Finding Aid, make excellent research tools.




Coalition To Save The Yaphank Lakes

We are committed to clean and protect our lakes, eradicate the invasive aquatic plants, restore their natural beauty, and preserve and protect the entire Carmans River environment.


Visit https://savetheyaphanklakes.org for more.

Our Shop features Yaphank and area history books; new, vintage & “almost-new” treasures.