Original 1919 Jess Willard-Jack Dempsey fight film footage used.
"Run Little Raindrop Run" (music by Harry Warren, lyrics by Mack Gordon) had been intended for this movie. Rather, in Springtime in the Rockies (1942), Betty Grable, John Payne and a chorus would sing the song. Later, Miss Grable and Cesar Romero would dance to the melody, played by Harry James and His Music Makers.
The montage of 1941 radio stars at the beginning includes Paul Whiteman (conducting), Fred Allen ("what's a little ink among friends?"), Eddie Cantor, Jack Benny ("I've gotta put my nose on"), Kate Smith, Rudy Vallee, and Walter Winchell ("Good evening, Mr. and Mrs. North America").
At one point, Vicki turns down advice by referring to the giver of the advice as "Beatrice Fairfax." Marie Manning started the first ever newspaper advice column, "Dear Beatrice Fairfax," in 1898. It had been syndicated nationally for years when she died in 1945.
Alice Faye disparages John Payne's idea and says she won't believe it until she sees it. He then says to Jack Oakie, "That dame is sure from .Missouri." The motto of Missouri is "The 'Show Me' State," and a popular saying at the time to express skepticism was "I'm from Missouri--show me" or just "I'm from Missouri."