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Most viewed - Philadelphia Subway
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 City Hall Interlocking Machine Room, Camden, N.J.101 viewsDelaware River Joint Commission
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 Erie Installation (Broad Street Line)89 views
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 Train Dispatcher for Subways (Old style model used in Phila. Subway)88 views
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 Fern Rock Yard Installation86 views
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 Fern Rock Yard Installation85 views
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 5th St. Interlocking Control Panel85 views
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 Market St. Extension82 views
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 Train Dispatcher for Subways (Old style model used in Phila. Subway)82 views
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 Train Dispatcher for Subways (Old style model used in Phila. Subway)80 views
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 Train approaching automatic signal NJ54 on eastbound track approaching City Hall Station77 viewsDelaware River Joint Commission
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 Market St. Extension76 views
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 Philadelphia Subway Relay Racks Packed for shipping76 views
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 5th St. Interlocking Control Panel76 views
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 Train approaching the switch at east end of Crossover no. 1775 viewsDelaware River Joint Commission
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 5th St. Interlocking Control Panel74 views
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 Indentra Rack with Amplifier, Philadelphia Subway72 views
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 Arrangement of switches and cabinet containing the ground detector apparatus, location T4, Camden anchorage71 viewsDelaware River Joint Commission
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 5th St. Interlocking Control Panel70 views
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 Arrangement of conduit pipes and location of instrument cases and stop valves70 viewsDelaware River Joint Commission
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 Train Dispatcher for Subways (Old style model used in Phila. Subway)70 views
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 Indentra Equipment for City of Philadelphia69 views
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 City Hall Compressor Room68 viewsDelaware River Joint Commission
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 Application of the 1000 amp. impedance bonds located on span section of bridge66 viewsDelaware River Joint Commission
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 Train approaching the switch at east end of crossover no. 1766 viewsDelaware River Joint Commission
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 Market St. Extension65 views
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 Market St. Extension64 views
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 Indentra Equipment for City of Philadelphia64 views
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 Erie Installation (Broad Street Line)64 views
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 5th St. Interlocking Control Panel64 views
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 Fern Rock Yard Installation63 views
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 Fern Rock Yard Installation63 views
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 Indentra Equipment for City of Philadelphia63 views
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