New Plant at Oakland. (1800 w.) (70233)
The golden gate electric interlocking
R S E
1916
Ills.
Article (Journal)
English
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Engineering Index Backfile | 1936
Engineering Index Backfile | 1909
|All-relay interlocking replaces crossing gate
Engineering Index Backfile | 1938
Engineering Index Backfile | 1928
|All-relay interlocking replaces crossing gate
Engineering Index Backfile | 1938