The Central Pacific conquered the Sierra Nevada Mountains with its line over Donner Pass and then went on to meet the Union Pacific at Promontory Point. This Southern Pacific track chart shows that line in 1980. From the Oakland Mole through Donner Pass and onto Ogden Union Station, here are 97 pages showing everything about that famous main line.
This is a scan of an original Southern Pacific track chart. The included key is a standard SP key. Updated to 1980. 97 pages, most are detailed at 10 miles to the page, but the line over Donner Pass (from just after Roseville to just before Sparks) is detailed at 5 miles per page.