1957 Topps Football Cards as Baseball Cards

 In 1957 both Topps baseball and football cards became the modern standard size of 2.5" x 3.5".  The football cards featured side by side photos, one head shot and one "action" photo.  Here is George Blanda's 1957 Topps card.

And here is the 1957 NL MVP Hank Aaron on a 1957 Topps football styled card.