For an online mapping resource, and the capabilities of printing topo maps that are better quality than you can get from the USGS check out this link..... http://mapper.acme.com/?ll=39.20140,-107.29248&z=14&t=T

Also, get maps from the BLM don't waste your money with USGS maps or other resources, because the BLM maps are seriously as good as they come. A Colorado Atlas and Gazeteer is also a nice tool to have for rough map scouting, but the BLM maps have topo features, plus outling public land, blm land, and private land; therefore you know ahead of the game what areas are going to be off limits. I'll be hunting within a 100 miles of you, good luck.