Super cool hand drafted engineering drawing of a catch basin trap dated June 26, 1926 on a wonderful drafting linen which is a woven, wax covered water resisted linen that was heavily used between the late 19th century and the 1930's and 1940's. Highly detailed. Signed and dated with the name of the company and client (City of Scranton PA.) These antique drawings are works of art in themselves and are great framed conversation pieces.