In 2011, the Oceanside Historical Society disbanded. Most of their collection was donated to the Long Island Studies Institute at Hofstra University. Materials pertaining to the history of the Oceanside Library were given to the library. The Oceanside Library Historical Collection consists primarily of scrapbooks created by Marion Sager, who was Oceanside Library’s first librarian. The collection also contains photographs, correspondence, news clippings, brochures and ephemera, all related to the library’s board, staff, patrons and events dating from 1937 to the present day.