In 1908, New York State aided the Library in instituting and using the Dewey Decimal Classification. In 1955, the Vischer Ferry Library donated many books to the Round Lake Library's collection, which significantly enhanced its offerings. The Round Lake Library was also the first Library in Saratoga County to join the Southern Adirondack Library System (SALS) in 1957, a voluntary association of public libraries in Hamilton, Saratoga, Warren and Washington Counties. As a result, the Library received funding for books, equipment and reference materials and by 1968 it offered the borrowing of books, records, art prints and films, as well as providing reference services and eventually interlibrary loan services.