"Goodbye, Blue Monday." was the motto of a company first named The Robo-Magic Corporation of America founded by Fred T. Barry
(a Midland City TM
character) in 1934. "...it's mission was to design and manufacture
the first fully automatic washing machine for use in the home". This enterprise
was a failure except for the control chip which the Army installed as a bomb release mechanism on bombers termed BLINC (Blast Interval Normalization
Computer). Robo-Magic Corporation changed into The Midland City Ordnance Company & later Barrytron, Limited but they both kept the motto.
Additionally, the protagonist in the book, Dwayne Hoover, painted this message on a 500 pound bomb which was going to be dropped on Hamburg when he was a civilian employee in the Air Corps during the second world war.
Source: Breakfast of Champions