Forest Machine 42080 | Technic | Buy online at the Official LEGO® Shop GB
The LEGO Power Functions Idea Book, Vol. 1: Machines and Mechanisms (Lego Power Functions Idea Bk 1): Amazon.co.uk: Yoshihito Isogawa: 9781593276881: Books
New World's Largest LEGO Technic set is a 3.9k piece mega-excavator - SlashGear
WIP] Perpetual Motion Machine - LEGO Technic, Model Team and Scale Modeling - Eurobricks Forums