Illustrated description of the Cincinnati plant of the Weir Frog Co. (2500 w.) (No. 43358)
Manufacture of switches and frogs
Ry Engng Rev
1913
Article (Journal)
English
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Railroad track frogs and switches
Engineering Index Backfile | 1891
|Railroad track frogs and switches
Engineering Index Backfile | 1888
|Railroad track frogs and switches
Engineering Index Backfile | 1888
Railroad track frogs and switches
Engineering Index Backfile | 1888
Railroad track frogs and switches
Engineering Index Backfile | 1891
|