Yes you can. Go to USGS.gov (after the shutdown), and look on the topic listings & click on Topographic Maps. Not only can you get the latest maps, but I believe you can get previous editions. When I worked in D.C. I lived in Reston, VA where the U.S. Geological Survey Headquarters is located. While I had an office in D.C. I persuaded the powers that be to also give me an office at USGS headquarters in Reston to use when it wasn't necessary for me to be present in D.C., which saved the hassle of a nasty commute. When I was in my office in Reston I found excuses to visit the mapping division which had an area that the public could walk in, browse the many, many files/shelves of maps there and buy the ones selected...it was interesting & fascinating. Also, I believe that the New Mexico Bureau of Geology & Mineral Resources may have some topo maps.