When Tom said "Don't You Believe It!", it is a reference to a radio program with that title, from the late 1930s and early 1940s. The program, hosted by Alan Kent and later Tobe Reed, introduced unique facts along with debunking popular myths, followed by its tagline "Don't you believe it!" The program was sponsored by the Lorillard Tobacco Company, promoting "Sensation" cigarettes.
This is the first Tom & Jerry cartoon that the music was not directed by Scott Bradley. Edward H. Plumb was Metro-Goldwyn-Mayer's temporary musical conductor.
Tom Cat speaks in this cartoon, as it concludes, slowly saying "Don't you believe it!" He said this quote, word for word, first in Mouse Trouble (1944), approximately eight earlier.
The home here has all the very latest furnishings, including a floor model console radio. Most Americans still relied on radio for their home entertainment, although TV was beginning a wide rollout into U. S. homes.
Tom is shown perusing Wow! magazine, presumably a gentleman's publication (for gentleman cats, of course, given the sultry kitty gracing the cover).