SummaryView of subway construction site on 4th Avenue between 18th Street and 19th Street with railroad tracks and two air tanks and a large concrete mixer in foreground.
NoteDate printed on recto: 9.30.1910. Stamped on verso: "Public Service Commission." Title from inscription on recto; supplied partially by cataloger.
SubjectConcrete mixers -- New York (State) -- New York ; Railroad tracks -- New York (State) -- New York ; Subways -- Design and construction -- New York (State) -- New York