Suffolk County Historical Society Share: Local Attractions/Recreation Suffolk County Historical Society Visit Website Request Info 300 West Main Street Riverhead, NY 11901 (631) 727-2881 727-3467 (fax) SCHS Online Facebook Hours: Museum Hours: Weds. - Sat., 10 am - 4:30 pm Library Hours: Weds. - Sat. 12:30 pm - 4:30 pm About News Map About Founded in 1886, the mission of the Suffolk County Historical Society is to collect, preserve, and interpret the ongoing history of Suffolk County, NY, and its people. Member Events BOOK & BOTTLE: Nov. 8, Long Island & World War One with Richard F. Welch Thursday Nov 8, 2018 ...read more 8th ANNUAL WOODEN WONDERLAND: Holiday Craft Show & Sale! Saturday Dec 1, 2018 ...read more What's Nearby? Distance: 5 10 15 20 25 50 mi.