I just received a new book from the publisher yesterday.
Robot Builder – The Beginner’s Guide to Building Robots
Que books, 2015. ISBN-13: 978-0-7897-5149-2 ISBN-10: 0-7897-5149-6
Cost (back cover) $39.99CDN, $34.99US
I found it to be a very good resource for all aspects of robot building, and has some really innovative ideas for robots that I have not seen in course projects to date. A good source of supplies as well.