Barriger Collection

Tue May 25 15:31:39 EDT 2021

Has anyone managed to narrow down the era of these images?  Electrification
would indicate 15 to 50.  Double track main at Elkhorn tunnel would say
after 22, I think.  Are there other clues that supply "no later than" or
"no earlier that" dates?
Thanks,
Jim Cochran
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