Chairman of the Hibernating Groundhog Lodge in Quarryville, Pa. calibrates the "ultra-secret invention" that will be used to contact "10,672 registered groundhogs in Lancaster County" on Groundhog Day.
image source: Temple University Library
Louisville Courier-Journal - Feb 2, 1947
Brooklyn Daily Eagle - Feb 2, 1947
Category: Holidays | Inventions | 1940s