I have always been facinated by this little pistol...
I know that there is an excellent hardcover book on the Liberator pistol and it's history... I saw it in the bookstore at the NRA Headquarters Museum here in Fairfax, VA last summer... unfortunately, I don't remember the author or the title
sorry.
I didn't buy it because as I recall the price tag was a hefty one... and since I don't own one, I passed on the purchase.
BTW, there were two of these pistols at the Dulles Expo Gun Show a few months back... I didn't bother to ask them to flip over the price tag under the glass... no use wasting their time...
Look up NRA museum phone number and ask for the bookstore. I am sure they will be glad to help with the title and would probably even mail it to you if you are interested.