Report on the Improved Water Supply of the City of Columbus, Ohio, Feb. 2 1901Samuel Merrill Gray · First published 2018Open the Tome
Report upon the sewerage of the District of ColumbiaRudolph Hering, Samuel Merrill Gray, Frederic P. Stearns · First published 1890Open the Tome
Report showing location and size of the main and intercepting sewersSamuel Merrill Gray · First published 1886Open the Tome
Proposed plan for a sewerage system, and for the disposal of the sewage of ...Providence (R.I .). Engineer Dept, Samuel Merrill Gray · First published 1884Open the Tome
Proposed plan for a sewerage system, and for the disposal of the sewage of the city of ProvidenceSamuel Merrill Gray, Providence (R.I .) Engineer dept · First published 1884Open the Tome
Proposed Plan for a Sewerage System: And for the Disposal of the Sewage of ...Providence (R.I .). Engineer Dept, Samuel Merrill Gray · First published 1884Open the Tome
