Abstract: An automated cartridge library (30) comprises a magazine mounting assembly (60) which holds at least one magazine (70) to a library frame (32), the magazine accommodating at least one cartridge (90) of information storage media. A cartridge transport system (40) transports cartridges between the magazine and a drive section (38). The magazine mounting assembly (60) comprises a magazine mounting surface (100) having a reflection region which is of contrasting reflectivity with another region of the magazine mounting assembly. A magazine guide flange (112) extends from the magazine mounting surface and has a label-bearing facet (123) formed thereon for each cell of the magazine, each facet being aligned with a corresponding cell. The magazine mounting assembly (60) further has two side walls (103) extending from a rear of the magazine mounting surface, planes of the two side walls being angularly inclined toward one another whereby a rear section of the magazine mounting assembly forms a wedge.