HealthSeptember 8, 1906
Sanitation of the City of Washington.--II
The Sewage Disposal System
Stories by Ben Winslow
The SciencesSeptember 1, 1906
Sanitation of the City of Washington--I
The Aqueduct and Filtration Plant
Sanitation of the City of Washington.--II
The Sewage Disposal System
Sanitation of the City of Washington--I
The Aqueduct and Filtration Plant