Photograph of a purchase order receipt for photographs of switch box, Diamond Electrical Manufacturing Company Ltd., Southern California, 1935. "Diamonde E, E, Electrical Equipment; Affiliated with Square D Company; Diamond Electrical Manufacturing Company LTD., 1318-62 East 16th Street, Los Angeles, Calif.; No. 23442; Dick Whittington; Date: 1-22-35; Ship to; Confirmation; Ship Via; Wanted; Terms:; Gentlemen: Being governed by instructions hereon, please enter our order for the following; Quantity: 2; Description: 8 x 10 Prints 1 Negative; Charge Acct. No.: 2-119; Job No. Req. No.; Our Order Number must appear on all invoices, delivery slips, cases and packages. Acknowledge this order at once and advise shipping date; DIAMOND ELECTRICAL MANUFACTURING COMPANY. Ltd. By: K.B. Curtiss" -- on receipt.