Looking for information on the Elko Sub

Was curious where the line ends and starts. Just did a google search. Nothing came up what I was looking for.

The Elko Sub is a 2 track sub between Elko Nv-Weso Nv,this was a Joint WP/SP shared use line in the past.
Track #1 is 136.1 miles long,track #2 is 130.1 miles long,the tracks do not follow together,take some what different
routes betwween Elko-Weso. Amtrak #5 uses track #1 WB and Amtrak #6 uses #2 track EB.
At Weso,the former WP route to Portola and the former SP route to Sparks/Reno(Donner Pass) split.
The Eastern end of the WP/SP Joint use was at Alazon Nv,where the former WP went to Odgen,and the former SP
went to Salt Lake City.

If possible,try to find a copy of Altmont Press "Central West Timetable"
Hope this helps.