Audio-visual materials in this collection range from old-fashioned reels of film and filmstrips to computer disks. Descriptions for the audiocassette tapes, reel-to-reel audiotapes, and some of the videotapes were taken from notes written on the boxes or the tapes themselves. Information for the film reels, filmstrips, phonograph records, computer disks, and the commercial videotapes was copied from the commercial box or album cover. All of the items are circus-related, with much of the audio materials consisting of circus and parade music.