These are hard to find. My hardcopy was literally handed down to me by a retiring tool push, kind of like passing the torch. I also snagged a CD copy at an Oil show a couple of years back, it has the following contact info.
Baker Oil Tools Literature Department
6023 Navigation
Houston, TX 77011
Phone 713 923-9351
Fax 713 923-9657
Schlumberger also has a very good handbook.