This microcomputer lab manual in the O'Leary Microcomputing Annual Edition system offers alternative lab tutorials to the current annual edition.
McGraw-Hill Microcomputing Labs: Annual Edition, 1990
McGraw-Hill Microcomputing Labs: Alternate Version with DBase IV Release 1.1
McGraw-Hill Microcomputing Labs: Annual Edition, 1990
McGraw-Hill Microcomputing Labs: Annual Edition, 1991-92