The Goofy Gophers were WB's answer to Disney's Chip and Dale. They not only have British names, Mac and Tosh, they speak in clipped upper class English accents.
The background artwork becomes more mid century in design and abstract in nature, as illustration changed with the new era. Even Elmer wears a new outfit.
Elmer is referred to by his name here, Mr. Fudd.
Home water coolers were becoming quite popular kitchen must haves in the post war era. The water jugs were made of heavy, blue tinted glass at the time. Modern versions look the same but have been replaced by plastic containers.