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18th Century Military Encampment with the 3rd NY Regiment in Celebration of America’s 250th Anniversary Come join us on May 16-17, 2026, 10:00 AM to 4:00 PM at Swezey Park. The 3rd NY Regiment 1775 Long Island Companies, a Revolutionary War reenactment group, will present an authentic 18th-century military encampment, recreating the daily life of Long Island soldiers and their families during the American Revolution. Click here for more. 
May 2026 General Meeting Thursday, May 21 2026 7:30 pm @ Swezey-Avey House Guest Speaker: MaryLaura Lamont Topic: William Floyd of Mastic: He Dared to Sign! William Floyd was a major landowner and prosperous farmer on Long Island, yet he dared to sign the document that made us a free and independent new nation. In doing so he risked his life, his family and home. Come hear the true story of Floyd and the Signing of the Declaration of Independence. Refreshments will follow the meeting. 
Spring Yard Sale Saturday, May 30, 2026 9:00 am – 4:00 pm (Rain Date Sunday, May 31, 2026) Vendors Set up 7:30 a.m. on the Hawkins House Lawns No Reservation Required Donation: $10 per vendor, payable onsite Call (631) 775-0735 with questions Click here for more 
June 2026 General Meeting Thursday, June 18, 2026 7:30 pm @ Swezey-Avey House Topic: A History of Middle Island and Surrounding Communities Guest Speaker: Paul Infranco, Historian Paul Infranco will discuss the history of Middle Island and surrounding communities Refreshments will follow the meeting 
Yaphank 300th Anniversary Celebration Event Sunday, June 7, 2026 Noon – 4:00 pm Tour the Oldest House in Yaphank – The Robinson House – No reservations required The home features an original fireplace and bread oven, wide plank flooring, and many other colonial features. Park and start the tour at the Swezey-Avey House 19 Mill Road, Yaphank, NY Or park on Walter Street, near the Firehouse Refreshments at the Swezey-Avey House after the tour Call (631) 775-0735 with questions | 
Please check back 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. GET INVOLVED
to the community. 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. 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. 
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 
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. |