Artifact Details Title DOS system master Catalog Number 102722844 Type Software Description (1) 5.25 in. floppy disk Date 1980 Publisher Apple Identifying Numbers Other number 680-0051-01 Number on floppy disk Version 3.3 Format 5 1/4 inch floppy disk Category automation/system Collection Title J. Ehrman software collection Credit Gift of John Ehrman Lot Number X5621.2010