American memory

American Memory is a gateway to the Library of Congressś vast resources of digitized American historical materials. Comprising more than 9 million items that document U.S. history and culture, American Memory is organized into more than 100 thematic collections based on their original format, their subject matter, or who first created, assembled, or donated them to the Library. The original formats include manuscripts, prints, photographs, posters, maps, sound recordings, motion pictures, books, pamphlets, and sheet music. Each online collection is accompanied by a set of explanatory features designed to make the materials easy to find, use, and understand. Collections may be browsed individually, searched individually (including full-text searching for many written items), or searched across multiple collections.