Blown joint at 20th Street and Gratiot Avenue, Detroit water supply system
Description:
View of blown joint at 20th Street and Gratiot Ave., Detroit water supply system. Printed on front: "Section 2, District #12. 6" blown joint rate 54,000 gal per day. Located at 20th St. and Michigan Ave. Sep. 21st, 1929." Stamped on back: "Manning Bros., commercial photographers. 504-505 Lincoln Building. Corner State and Park Sts., Detroit, Mich."