Buildings and structures of American railroads. A reference book for railroad managers, superintendents, master mechanics, engineers, architects, and students (1893)
Berg, Walter Gilman, 1858-1908 · New York Wiley · leaf 94
uldbe well recommended for deep pits. In sections of the country where stone is cheap, the brick sidewalls could be replaced by stone ones, built slightly wider, in which case this design, with the sug-gested modifications, would be worthy of consideration as a good deep pit standard for…
Building · Railroads
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.