Six tracks. Brief illustrated description.
Renewal of Filbert Street Bridge, Philadelphia, Pa., without interruption of traffic
RR Gaz
1894
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1945
|Boylston street bridge renewal erection
Engineering Index Backfile | 1910
Street traffic in Philadelphia
Engineering Index Backfile | 1931
|Difficult bridge reconstruction job completed without interruption of railway traffic
Engineering Index Backfile | 1948
|Tunnel lining without traffic interruption
Engineering Index Backfile | 1901
|