old 1930s or 1940s Wolverine Pigskins work shoes advertising postcards

Lot of two old unused 1 cent advertising post cards for -Genuine Wolverine Pigskin Work Shoes- from Theodore Edwards - McFarland, Wisc.

These are in nice unused or mailed condition. The printed postage is 1 cent and so they would have been printed before 1952, but we're not sure of the exact age.