View looking west at Pennsylvania Railroad tunnels as they near the surface in Long Island City. View looking east from same point ; Sunnyside yard in the distance. THE LONG ISLAND PORTAL OF THE PENNSYLVANIA SUB-RIVER TUNNELS., scientific american, -1909-08-28
View looking west at Pennsylvania Railroad tunnels as they near the surface in Long Island City. View looking east from same point ; Sunnyside yard in the distance. THE LONG ISLAND PORTAL OF THE PENNSYLVANIA SUB-RIVER TUNNELS., scientific american, -1909-08-28
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