And below is a drawing just listed on eBay by the Gallery on Baum attributed to the same artist working in the same year:
Now, Pony Pals™, the quiz: using just the evidence before you and what you've learned over the past several weeks on this blog, how would you characterize the second drawing shown above?
UPDATE: Here's another one, also from 1945. Compare/contrast:
One of these things is not like the others!