San Francisco : Architect and Engineer, Inc · leaf 930
a 3 ^^ 5 o THE ARCHITECT AND ENGINEER 95 … That Mr. Fitzpatricks scheme is not impracticable is shown by this picture of the process carriedout in building the portion of the New York subway that goes underneath the Harlem River. Inthis case the sections were built of steel instead of concrete; but they were sunk, as Mr.…
Architecture · Building
Internet Archive · Public Domain Mark 1.0. Free to use for anything.