Field set & disc grinder for postcards, Los Angeles, Calif., 1941

2 photographs with 2 Real Photo Postcard prints showing a disc grinder, a set of interchangeable parts for it, and another set of tools with Allen wrenches, Los Angeles, California, 1941 October 30. The stampboxes on the postcards reveal the manufacturer to be EKC. "Client: E. S. Rush Manufacturing Company, Mr. Rush, 499 San Fernando Road, Los Angeles; original print order: 50 each postcards, 100 for 7.00; 2 copies 5x7; Amount: 3.00" - on envelope. "50 post card copy field set - 3.50, 50 postcard copy disc grinder - 3.50, 2 negative for above @ 1.50 - 3.00; [total] price 10.00" - purchase order signed by G. Rush. Editor's note: neither the creator, nor place, nor date of the original images is known. The date and place here are where and when the postcards and copy negatives were made.