After running his own dancing school for a year he married one of his ballet teachers, Alice Cochran,[1] and decided to try a career in radio.

Senator Claghorn made his radio debut October 7, 1945, and six months later was called "unquestionably the most quoted man in the nation" by Life magazine.

"During the late 1940s, Mr. Delmar captivated 20 million radio listeners every Sunday night with his burlesque of a bombastic, super-chauvinistic legislator who drank only from Dixie cups and refused to drive through the Lincoln Tunnel," wrote The New York Times.

"His stock expression, 'That's a joke, son,' was for many years one of the nation's pet phrases, mimicked by children and businessmen alike.

[11] Delmar was heard by a later generation of television watchers via the animated characters The Hunter, Commander McBragg, Major Minor on "Klondike Kat", and other Saturday morning cartoon icons.

The Hunter ran as an ancillary segment of the cartoon series King Leonardo and His Short Subjects, produced by Total Television Productions.