USGS topographic map resource - geological atlas folios

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USGS topographic map resource - geological atlas folios:

USGS links to all the folios

Here are three of the folios showing the route of the Central Pacific Railroad in California:

Sacramento folio, California, 1887-88
Folios of the Geologic Atlas 5
By: Waldemar Lindgren

Colfax folio, California, 1885-87
Folios of the Geologic Atlas 66
By: Waldemar Lindgren

Truckee folio, California, 1889
Folios of the Geologic Atlas 39
By: Waldemar Lindgren

Courtesy of Dennis Hogan, from the Railway & Locomotive Historical Society Internet Message List digest.

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Truckee USGS folio, contour map, 1889, detail
showing the Central Pacific/Southern Pacific Railway Line
across the Sierra Nevada Mountains and Donner Lake.