Items date from the 1930's or 1940's. Printed along one edge in large lettering is "SIGNS, Out Door Advertising, Show Cards, Chas. J. Myers, 136 Chambersburg St., Gettysburg, Penn'a., 'Tell The World With Signs.'" At bottom is company logo. The back of the envelope has very large logo and lettering that reads "SIGNS." We have 4 in stock.