re contemplated. teenth Street to a point east of Twenty-second Street, for electricity and sewers than was known to exist at is 4,180 feet in length. The tunnel has a length of 2,711 The Philadelphia Subway and Tunnel which has the different bureaus. They were all in active opera- feet from the… … known ability in order to Avenue, which is almost in attain the desired end. One the heart of the city, would MAP OF THE PHILADELPHIA SUBWAY AND TUNNEL, WITH SECTIONS. of our engravings shows one not only seriously damage of the difficulties with which valuable property, but would the engineers had…
Sail · Adapted · Munn · Eclipse · Patents · Subway · Scientific American · Tunnel · Vitrified claypipe · South africa · Pennsylvania avenue · Horse power · Liquid air · Woods motor · Sandy hook · Broad street · Skeleton frame
Internet Archive · Public domain (published before 1931). Free to use for anything.
