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Visionary planning report for Philadelphia region, 1928
The Water Supply Problem of Philadelphia, 1899
Bacteria in Delaware River, Torresdale Filters, 1913
Perkiomen Water Supply Surveys, 1866
“A Forty-Acre Water Basin,” The Times, June 14, 1883
“Another reservoir site chosen,” April 26, 1883
“Philadelphia Underground,” Jan. 29, 1961