I just heard from a radio interview that the book of the
PBS series 'They Made America' supposedly mentions Gary Kildall.
No guarantee, but if the ser. is in chnonological order then
you might want to check it out two weeks from today.
http://www.pbs.org/wgbh/theymadeamerica/
He's in the book, they said.
John A.
Not affiliated with the book or show.