Front view of the Shield used in the Pennsylvania Tunnel
Tunneling the East River: 'Front view of the Shield used in the Pennsylvania Tunnel' (1906). Artist/photographer: Unsigned . Provenance: "Scientific American". Type: Antique halftone photographic print.
Size: 2478px × 2297px
Photo credit: © Antiqua Print Gallery / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 1906, 20th, antique, century, east, front, halftone, pennsylvania, photographic, print, river, shield, tunnel, tunneling, twentieth, view, vintage, york
