Campaign materials include advertising, audio and video recordings, campaign organization memos and meeting notes, clippings, Congressional ratings and voting records, correspondence, endorsements, fundraising files, photographs, information on opponents, and polling data. Files labeled "good letters" or "favorable correspondence" are often found with the campaign materials and contain thank you letters and other supportive correspondence from constituents, government officials, interest groups, and local business leaders. Of particular interest is a file on the Ralph Nader Congress Project in the 1972 campaign files and another on Watergate in the 1974 files. Bumper stickers, pins, buttons, and keychains from the 1978 and 1982 campaigns are also included.