If you can't get hold of 'Sled Driver', try looking for 'SR71 Revealed - The Inside Story' which gives a good insight into life in the Habu community. Plus a considerable amount of technical information about the jet.
www.habu.org says of the Col's book:
"SR-71 Revealed: The Inside Story" (Richard H. Graham)
Buy this book. Written by a retired blackbird pilot who went on to head the entire Program, this is THE book to get if you want to learn about the blackbird. If you had a son who was accepted into the Program, wrote you every week and told you everything that was going on, you would have something like this book (assuming that your boy didn't land in the stockade for treason, of course). It's all here... technical info, war stories, anecdotes, everything you were looking for. Col. Graham donates all proceeds from his book to the J.T. Vida Memorial fund. You can get it from your local bookstore, but you can order an autographed copy directly from the author.
ISBN: 0760301220"
There's a link on the site to tell you how to order from the author. Incidentally, all royalties go to a fund dedicated to the high time Habu, J T Vida, who passed away after a long battle with cancer.