Catalogue No. 10 and Bargain Book No. 11 of Cameras, Kodaks, Lenses and Photographic Accessories 1920-1921, Central Camera Co. (Chicago, IL), dated 1920, ~5¾"x8¾", 118pp & Bargain Book a-j
Like many of the catalogs in the Chicago area, this one covers two years, and yet is issued yearly (as evidenced by the Central Camera Co. Catalog 1919-1920). An extensive list of used equipment is included after the main catalog, and is titled: Photographic Book of Special Bargains No. 11 for the Amateur and Professional, also included here.