View of excavation for foundation of Main Library, Detroit Public Library. Wooden ramp in foreground; excavating tower with sluice in background. Numerous boards on construction site. Printed on front: "No. 122. Taken April 5-15. Detroit Public Library bldg. Looking west. Cass Gilbert, architect. Irwin & Leighton, builders." Stamped on back: "Charles Ruel Messinger, commercial photographer, 1646 Woodward Ave., Detroit, Mich., phone Hemlock 2186, phone North 6298."