I realize it's been awhile since you posted this question, but there is another Nevada book out by the same authors for the southern region if you're interested: Nevada Trails: Southern Region by Peter Massey, Angela Titus and Jeanne Wilson. These are pretty decent trail guides with full color photos, GPS coordinates, turn by turn directions and route mileage. They're supposed to be coming out with a Great Basin version as well, but I haven't seen it yet.
I read the Massey Nevada Western Region book, which has excellent histories and pictures. But when at home I started plugging in lat/lon coordinates for the GPS waypoints, I was astonished at how many typos or obvious copy-paste errors I encountered for the back-country trails. There are no downloadable waypoints either, and it is clear the author never checked his work. The book uses Benchmark maps, so if you do rely on Massey's book, I would certainly bring that along with a GPS that shows ungraded/mining/logging roads, in addition to graded county and Forest Service roads.