Forbidden Lego: Build the Models Your Parents Warned You Against!
by Ulrik Pilegaard, Mike Dooley
No Starch Press; Published: 2007-08-15; Paperback; Book
Best price: $14.25
Price in other shops: $24.95

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Cool Robots
by Sean Kenney
Henry Holt and Co. (BYR); Henry Holt and Co. (BYR); Published: 2010-09-28; Hardcover; Book
Best price: $7.61
Price in other shops: $12.99

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The Ultimate LEGO Book
by DK Publishing
DK Publishing; Published: 1999-09-01; Hardcover; Book
Best price: $109.90

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Cool Cars and Trucks
by Sean Kenney
Henry Holt and Co. (BYR); Published: 2009-09-01; Hardcover; Book
Best price: $7.62
Price in other shops: $12.99

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The LEGO Technic Idea Book: Wheeled Wonders
by Yoshihito Isogawa
No Starch Press; Published: 2010-10-22; Paperback; Book
Best price: $11.43
Price in other shops: $19.95

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The Unofficial LEGO Builder's Guide
by Allan Bedford
No Starch Press; Published: 2005-09; Paperback; Book
Best price: $14.23
Price in other shops: $24.95

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The LEGO Technic Idea Book: Fantastic Contraptions
by Yoshihito Isogawa
No Starch Press; Published: 2010-10-22; Paperback; Book
Best price: $11.60
Price in other shops: $19.95

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The LEGO Technic Idea Book: Simple Machines
by Yoshihito Isogawa
No Starch Press; Published: 2010-10-22; Paperback; Book
Best price: $11.06
Price in other shops: $19.95

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The LEGO Ideas Book
by Daniel Lipkowitz
Penguin Group USA; DK CHILDREN; Published: 2011-09-19; Hardcover; Book
Best price: $13.71
Price in other shops: $24.99

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Lego Crazy Action Contraptions
Wmu; Klutz; Published: 2008-09-01; Hardcover-spiral; Book
Best price: $11.48
Price in other shops: $21.95