City of Pittsburgh 1900-1985

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1920-Liberty-Tunnels.jpg
Pittsburgh PA: Construction of the Liberty Tunnels on the south side of the tunnels near Rt 51.
Pittsburgh PA: Construction of the Liberty Tunnels on the south side of the tunnels near Rt 51.
1920 Liberty Bridge
1920 Liberty Tunnels construction
Mount Washington
Pittsburgh
concrete arch
construction site
railroad ties
railroad tracks
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