Well, for the detailed info (no images) the Red Eagle News Exchange's
Ruger Reference stands alone!
E Mail the Editor for info: CHRugers (at) aol (dot) com
The newest book on the topic, complete with lots of images, is J.C. Dougan's
Ruger Pistols and Revolvers.
Click Here
R.L. Wilson's
Ruger and His Guns tells the history of the man and his Company. Very interesting reading.
There are also many others that were published over the years. They all contain useful data, IMHO, but the newer examples are, obviously, more "up to date".
......there are more.......
flatgate