Eastbound at Deeth, NV on July 28, 1979.  Photograph by John F. Bjorklund, collection of the Center for Railroad Photography & Art, http://www.railphoto-art.org

Freight Schedules

WP Condensed Freight Schedules 81 6-1-1981
WP Freight Schedules 11-20-1982

Train Order Books

WP Fourth Sub Train Order Book 3-22 to 4-13-1962
WP Third and Fourth Sub Train Order Book 7-24 to 8-7-1969
WP Fourth Sub Train Order Book 9-19 to 10-1-1971

Other Resources

Wx4.org has a couple condensed freight schedules here and has other pages with WP employee timetables.