GoKawiil1963 IBM memo reveals Thomas Watson Jr.'s alarm over Control Data's CDC 6600
Thomas Watson Jr., then IBM's chairman, wrote an internal memo in 1963 questioning how his company had lost industry leadership to Control Data Corporation, a firm he noted had only 34 employees, including its janitor. The memo, later nicknamed 'The Janitor Memo,' reflected concern over the competitive threat posed by CDC's new 6600 computer.