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The working titles of this film were Patent Applied For and Hot Water. In December 1947, Hollywood Reporter announced that Donald O'Connor was to be the film's star. Dennis Day then tested for the starring role, and Gloria DeHaven was under consideration as his co-star. Charles Meredith is listed in a Hollywood Reporter news item as a cast member, but his appearance in the final film has not been confirmed. Although Hollywood Reporter announced in late May 1949 that Dick Towers was to make his debut as a first cameraman on the picture, no other source credits him. Some scenes were shot on location in Washington, D.C.