The USGS website has changed some. Now you can download topographic maps, even old ones from the 1950s and before, as pdf files. For free! http://usgs01.srv.mst.edu/store3//digital_download/mapping_ap.jsp Here's a partial shot of the Barstow quadrangle from 1956
I notice a quirk, I guess in the trainboard software. I saw the link Richard320 posted, and it works just fine when you click it. However it works as a hyperlink that does not display in the printed text of the post. I tried pasting and copying it to my Word page , and the link as it appears to the eye in the text does not work. When the cursor is held over the link, the actual link appears in the bottom left corner of my screen, and I was able to correct and type it into my Word file. I have noticed this often when I post messages and the trainboard hardware automatically creates a link to some website somewhere I did not intend. Let's see what happens if I refer to a type of rail car as box... and get a link to U-Haul packing boxes or some such, which I did not know I was making...
There is a program called VigLink running in the background that attaches hyper links to key words. Trainboard gets a lot of revenue from them for allowing them to do so. Helps pay the bills here.