This vintage set of guidebooks and disks is a must-have for IBM enthusiasts and collectors. The set includes quick reference guides and disks for the Personal System/2 Model 55 SX desktop computer. The materials are in English and have been well-preserved. The brand is IBM and the manuals are in a format suitable for manuals. The items were made in the United States and are compatible with IBM products. This is a great addition to any collection and a useful resource for those who still use these systems.