Prelinger ArchivesFounded in 1983, the Prelinger Archives grew into a collection of over 60,000 "ephemeral" (advertising, educational, industrial, and amateur) films. In 2002, the film collection was acquired by the Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division. Prelinger Archives holds approximately 4,000 titles on videotape and a smaller collection of film materials. Prelinger collects, preserves, and facilitates access to unique films of historic significance.