Map of the city of Washington showing present main sewerage and sewage outfalls : also the territory flooded in June 1889.

Relief shown by contours. Depths shown by soundings.
Partial cadastral map showing built-up areas.
At upper right: Plate 1. Report of Board of Sanitary Engineers, Rudolph Hering, Samuel M. Gray, F.P. Stearns.
"S Rept 623 53 2."
LC copy halved and mounted on cloth backing.
LC copy accompanied by annotated map photocopy lacking Senate rept. no., printer's statement, and outer margin line.
Available also through the Library of Congress Web site as a raster image.
DCP