Mae Questel did both voices for Olive Oyl and Popeye. Jack Mercer had just enlisted for military duty in WWII and wasn't available to do Popeye's voice.
The opening signs are a send up of the popular Burma Shave advertising billboards of the era.
One of the few Popeye shorts where Popeye doesn't eat spinach to get the upper hand on Bluto.
Both Popeye and Bluto have tape (or something) put over their mouths censoring what they were going to say at the end.
One of the few times Popeye is seen with a beard.