One of the stores in the background is named "General Merchandise", and underneath reads Claude Smith, Proprietor. Claude Smith is the cartoon's layout artist.
When the villain holds up the ice cream wagon (Good Rumor is a pun on Good Humor, the ice cream truck company.), both the character and his horse ask for ice cream. Tutti Frutti and Neapolitan were two popular flavors of the era.
WW2 had just ended, so Red the entertainer transitioned from wartime worker (in Swing Shift Cinderella (1945)) to full time cabaret singer. Both shorts were released just after the cessation of hostilities; however, the earlier cartoon likely was in production during the last days of the war.
The Wolf sticks up the Good Rumor truck on Route 66, which was established on November 11, 1926.
The background art was meticulously and colorfully rendered, as befitted animation's golden age. Among the desert plants seen are Saguaro and barrel cacti, yuccas, and the Joshua tree.