In the 20's and 30's there were lots of fantastic illustrators working for the magazines of the time like "Mystery" and "Pulp". Vargas got famous for his Playboy stuff most of all. Here's a non Vargas, one of my faves.......
You also have to remember that nude photos weren't in magazines until PB and the 50's. In the old day, it was dirty comics that kept the soldiers at war company....