His son Jeff's books are all available, but unfortunately the very good
Killer Angels isn't yet avaialble as an ebook (except from pirate sources). Neither is his other book
For Love of the Game.
EDIT: This is weird. The publisher, Random House, shows on their site that it came out as an ebook over a year ago, but I can't find it for sale anywhere.
http://www.randomhouse.com/catalog/d...=9780345513731