The scary radio show that Tom is listening to at the beginning of this short - "The Witching Hour" - was an actual 1940's radio show. The voice that Tom hears on the radio was provided by Martha Wentworth, who hosted "The Witching Hour" as Old Nancy, the Witch of Salem.
Last Tom and Jerry cartoon supervised by William Hanna and Joseph Barbera.
This is the last Tom and Jerry cartoon to use a MGM's opening and closing with a blue background in an original issue.