I picked up Prison Tattoos at a college bookstore because it was on sale. It included temporary tattoos made from some of the convicts' designs, which was also novel.
I mainly enjoyed the introduction and conclusion of the book, discussing prison and tattooing, the reasons, the methods, the meanings, everything. It included a discussion of the penal system's dislike of tattooing in prison facilities.
The images were striking, but they were mostly of full bodies and torsos, so the actual tattoos were hard to see any detail in. Also, being a showcase of prison work, there were few pieces that looked particularly good. However, as a gallery of the genre, it got the point across.
I am glad I purchased this book, as I found it interesting, but it was not the valuable guide that I had hoped that it would be.