FYI NatGeo recently released free printable USGS TOPO maps.

[Xplore]

Pretty cool interactive map for TOPO's

PDF Quads - Trail Maps

 

[Ron4RNevada]

Yep. I've been using it for about a month now. So far printed 70 0f them. Each quad prints on five sheets of paper = I've used a whole pack of printer paper and four ink cartridges. The maps are really handy for me.