Surprisingly, few Mr. America title winners had their own training courses. Alan Stephan, the winner of the 1946 AAU Mr. America title was one who did. Here’s a nifty ad for his training course which ran in several magazines. As a side note, the 1946 Mr. America contest was actually the first contest Stephan entered.
Stephan could also lay claim to being “Mr. America” more-so that anyone else, since he was the only man to win the title in the AAU as well as the IFBB (which he accomplished in 1948).