Gravel in filter bed, Filtration Building, Springwells Station, Detroit water supply system
Description:
View of gravel in filter bed, Filtration Building, Springwells Station, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Springwells Station. Bureau of Filtration. Miscellaneous. No. 2. Date: 6-1-31. Photo by Manning Brothers." Label on back: "Springwells filtration plant collection system and largest size gravel in a filter bed. June 1, 1931."
