Tim Detweiller initially published 2 different books with 5 lock plans each.
The 2nd book, Making More Working Wooden Locks, went out-of-print first. Then in late 2013, the 1st book went out-of-print also.
In 2014, the publisher basically combined both books into one new book, and it is available for purchase on Amazon.com.
I do not own this book, since I already own book #1 and book #2. They left out 1 lock plan since the first 2 books had a total of 10 lock plans, and this 3rd book only has plans for 9 locks.
If you are unable to borrow or purchase the new 3rd copy of the book from Amazon.com, send me an email and I will try to help.