From the book description:
A collection of three cut-out models of locks. They include three of the main varieties of lock: combination, mortice and "Yale". The models are colour-coded and are accompanied by a minibook describing the historical development of lock design and possibilities for the future.
It may be out-of-print, but it seems there are still some to be had. Here's where you can get The Paper Locksmith: A Collection of Working Locks to Cut Out and Glue Together.