UPDATE II: I received this small booklet. There are thirteen pages (with lots of pics) written by Joe Brown and eleven pages about donuts, including a quiz and recipes (as in, you can use donuts in a variety of ways). So, if you want jeeps, don’t buy this booklet; but, if you like donuts, then this might be a winner. Below are a few sample pages …
================
UPDATE: Curiously, after I purchased a copy on Amazon, the price went up a dollar.
In early 1944, Actor and Comedian Joe E. Brown published “You Said A Mouthful”, a book about his adventures entertain troops. The cover includes an illustration on the cover of him on a jeep. If interested, here are various copies for sale on eBay.
“A rip roaring; Illustrated; funny story of Joe E. Brown’s adventures in entertaining millions of doughboys all over the world.”

PHOTO CREDIT: University of South Carolina … https://digital.tcl.sc.edu/digital/collection/jmetz/id/1197
The book was published by the Doughnut Corporation of American and Bond Bread. Thus, this explains why he’s holding a donut. An advertisement for Bond Bread is included on the back of the book: