Racial caricature
I found a copy of Bill Hume's cartoons "Babysan: A Private Look At The Japanese Occupation" on ebay. It includes a set of highly sexualized racial caricatures of Japanese women in relationship with US soldiers in occupied Japan. Scanned & posted to IA:
https://archive.org/details/babysan-a-private-look-at-the-japanese-occupation/mode/1up
The work screams for context and critique. Fortunately, there is a fantastic essay by Kim Brandt that serves as a great first stop: