I hadn't seen a Novelty book until I started looking into the Funnies, Inc. output a few weeks ago, and was pleased to find a number of stories credited to the writers as well as artists on the splash pages. The bottom tier here is from Spillane's Cadet story "Espionage! In the Senate Building!" in Target Vol. 3 #7 (Sept/42).
He's known to have worked on the short-lived WWII-centric strip Jap-Buster Johnson, and in fact this story is the origin, "Friendship" from U.S.A. Comics 6 (Dec/42). The Spillaneism I've excerpted in all three tiers is "keed" for "kid"; the "yup" seen here is another one he uses. "Aghrr", seen later in the story, in various hyphenizations is used by a number of the Funnies, Inc. writers, although this is the one time I've seen Spillane use it. It's in the next story in #7, but among other things, Johnson's first name has changed from Doug to Everett, so I don't jump at Spillane for that one.
His one Timely superhero story that I've come across so far is "The Case of the Attempted Dreadnaught Disasters" in Human Torch 7 (Spring/42). A Spillaneism seen later in the story is "Ye gods." This is the point at which Carl Burgos had just stopped writing all the Torch stories he was drawing.
I hope eventually this will lead to Mickey Spillane’s stories elsewhere—for Captain Marvel and such.