Larner-Johnson valves, Springwells Station treatment plant during construction, Detroit water supply system
Grab
Description
View of workers with Larner-Johnson valves during construction of the Springwells Station treatment plant, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Springwells Station. Check valves. Contract P.C. 49. Pit #1. Larner Johnson valves. No. 1. Date: 6-30-31. Photo by Manning Brothers."