Abstract: A cassette storage rack having a tray-like base with dividers so as to orient the cassettes in their boxes uniformly in the rack. The cassette boxes are retained in the rack by means of a resilient foam block which engages one edge of each box and urges it against an opposite retaining wall.

Abstract: A cassette-carrying case having a base and cover joined by a piano hinge which allows the base and cover to be opened a full 180.degree.. Easily operable latches are incorporated into the cover, which automatically lock the case closed when the cover is moved to the closed position. A handle is incorporated into the main body of the base and cover.

Abstract: A cartridge for an endless magnetic tape with a reel having (1) a tape deck and an upwardly and inwardly tapered column with a wide cap to support the tape on the deck; (2) ribs and openings in the deck to crown the tape on the deck and allow particles to drop below the deck; (3) a tapered cam post to support the tape loop at one end across its width at the front of the cartridge; (4) a contoured pressure pad to support the tape loop at the front of the cartridge; (5) a guide to support the tape loop at an angle between the deck and cam post; and (6) supports for retaining the convolutions of tape on the deck and the loop when it becomes slack.