MITS (June 1975). "MITS advertisement". Digital Design. 4 (6). CMP Information. Retrieved 2008-01-01. "There was a subsequent article in February's Popular Electronics and the MITS people knew the Altair was here to stay. During that month alone, over 1,000 mainframes were sold. Datamation, March 1975." "By the end of May, MITS had shipped over 2,500 Altair 8800's"
historyofpersonalcomputing.com
"Heathkit H8". The History of Personal Computing. Retrieved 2021-07-12.
Lengthy comments about various issues in S-100 made by the original designers have been collected on the S-100 Bus termination and legacy support page maintained by Herb Johnson]
