View of excavation for foundation of Main Library, Detroit Public Library. Steam shovel digs inside foundation; tower at edge of foundation. Sign on steam shovel: "Marion shovel, model 26." Printed on front: "No. 108. Taken Mch-8-15. Detroit Public Library bldg. Looking northwest. 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."