The movie fan magazine market literally exploded in the mid-1930s, and there were dozens of fan magazines with beautiful color covers, gorgeous color portraits inside, and many fascinating articles.
Antique stores are one good place to check.
Many used book stores also sell old magazines. Buy a copy of Movie Collector's World , Paper Collector's Marketplace , or any one of the other dozen or so movie collector's magazines that are available at most newstands. These magazines contain display ads for the larger dealers and generally have a classified section where smaller dealers and other collectors may place ads for magazines for sale, as well as magazines wanted. This includes magazine and newspaper clippings, flyers, programs, and so on. Collecting paper can be a lot like a treasure hunt.