The cartoon Lil' Abner was hugely popular at the time and might have had some inspiration for the hayseed main character...and his bombshell lady friend.
When Blackie wiggles his ears, it's a send up of popular actor Clark Gable, whose pronounced ears were the subject of much humor. Blackie also resembles the actor a bit.
Daisy Lou's city apartment has all the latest and most stylish furnishings, including a cabinet console radio. TV was not yet a mainstay in postwar homes, though it was becoming more popular and accessible.
Early in the short, Elmo is seen trying to style his hair into an exaggerated pompadour, a style popular at the time.