Sources on The Race Factor

Bugs Bunny Nips the Nips(cartoon)
Commando Duck(cartoon)
Der Fuehrer's Face(cartoon)
Eleventh Hour (Superman)
How to Be a Sailor (Goofy)
Japoteurs (Superman)
The Ducktators (cartoon)
Tokio Jokio (cartoon)
You're A Sap, Mr. Jap (Popeye)

(Note: Much of this type of material is covered in various older books that I have reviewed in the section on the internment of the Japanese and Japanese Americans.)