1978 Press Photo Ronald Graef checks pollution level in a sewer in Esabreck

Ronald Graef, an engineer, checked the pollution level Tuesday in a sewer in Esabreck. The sewer system's efficiency is being checked as part of the Illinois lawsuit charging that Milwaukee is polluting Lake Michigan

Photo measures 7.5 x 12.5 inches. Photo is dated 03-27-1978.

.

Photo back: