A 6502 Disassembler from Apple
The 6502 Disassembler written by Steve Wozniak and Allen Baum for the Dr. Dobbs Journal.
Document is dated September 1976.
See http://www.stockly.com/historicdvd.php for information on getting this as well as other large documents on 5 DVDs for the cost of media.
Preserved in time thanks to David Craig.