Workers constructing tunnel, Waterworks Park, Detroit water supply system
Description:
View of workers constructing tunnel, Waterworks Park, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Land tunnel and structures. Contract RC 12. Dravo Contracting Co., contractors. Photo no. 61. Date: 1-8-31. Photo by Manning Brothers." Typed on back: "15 ft. 6 in. diameter tunnel. View of north heading: face breast-boarded preparatory to placing bulkheads for tunnel lock."