This wonderful book is currently available in hardcover at amazon.com for 31% off the regular retail price. This is a great deal.
The book is printed on fine glossy paper and is full of color photos (160 in all). The book profiles over 20 leading automaton-makers, and provides step-by-step instructions for making an automata test-bed. There is also a section teaching you how to make ten fundamental mechanisms.
One of the best things about this book is that there are scale patterns to copy and use -- cams, gears, pin-wheels, ratchets, and even a Geneva mechanism.
Visit Amazon and use the Search Inside! feature for Automata and Mechanical Toys
Following as a close second, Peppé's book entitled Making Mechanical Toysshould also interest you.