vertical file वाक्य

However, the concept of vertical filing was clearly practiced as early as 1895 when a U . S . patent ( 533053 ) was issued to W . A . Cooke, Jr . for A Receptacle for Letters or Other Papers.
Now housed in the Broadcasting Archives at the University of Maryland, the Library of American Broadcasting is a wide-ranging collection of audio / video recordings, books, pamphlets, periodicals, personal collections, photographs, scripts, and vertical files devoted exclusively to the history of broadcasting.
Other collections include " the "'Ephemeral Collection "'which contains resources in the following categories : calendars, dust jackets, family genealogical booklets, flags, maps, postcards, posters, sheet music, slave documents, yearbooks, vertical files, educational kits, black history month essays, funeral programs, coins, comic books, playbills, typescripts, buttons, recipes, autographs and stamps ."