Well, it turns out it's part of a larger exhibit:

This is from an AP Photo found here. The caption reads:
"Anti-Hitler propaganda is seen on display in a new exhibit on World War II at the Lehigh Valley Heritage Museum in Allentown, Pa. , Nov. 7, 2007. The 10,000-square-foot exhibit, which opens to the public on Veterans Day, is organized thematically to cover the homefront, the battlefield, and the war's toll on life and property"
Thanks, rcs.