The Folger's first catalog of its collection began in 1935, when Edwin Willoughby, a scholar of library science and the First Folio, began to catalog the book collection based on Alfred W. Pollard and Gilbert Richard Redgrave's "Short-Title Catalogue". Though Willoughby developed a unique classification system based on the Folger's needs, in the late 1940s the Folger adopted that of the Library of Congress. In 1996, Folger staff and readers were given access to Hamnet, the collection's online catalog; the site became available to the public in 2000. Today, the Folger uses several classification systems.