Union Pacific Railroad Standards Drawings Through 1984, 459 PDF Pages on DVD.    This collection of Standard Drawings is in numerical order but I don't know if it is complete because it came without and index page. Many pages have handwritten notes and contains track, signal, roadway, bridge, tool, buildings, water towers, switches and more.I have hundreds of railroad items not listed yet. If you don't see what you are looking for listed, such as, Track Charts-Equipment Diagrams-Standard Plans-Timetables etc.  Please contact me and I will check to see if I have what you want. I will then list the item(s) on eBay for you and/or start a want list for you.