Links:
[1] http://www.thinkfun.com/shop/product/aha-4-t,5,13.htm
[2] http://www.thinkfun.com/sites/default/files/images/product_library/aha_4tpuzzle/AHA4TPuz-Sell-1469.pdf
[3] http://www.thinkfun.com/sites/default/files/images/product_instructions_pdfs/AHA4TPuz-1469-IN02.pdf
[4] http://www.thinkfun.com/sites/default/files/images/product_library/aha_4tpuzzle/AHA4TPuz-1469-solution.pdf
[5] http://www.thinkfun.com/sites/default/files/images/product_library/aha_4tpuzzle/AHA4TPuz_1469_hires.jpg
[6] http://www.thinkfun.com/sites/default/files/images/product_library/aha_4tpuzzle/AHA4TPuz_1469_lores.jpg
[7] http://www.thinkfun.com/sites/default/files/images/product_library/aha_4tpuzzle/AHA4TPuz-1469-Isl-Logo.pdf
[8] http://www.thinkfun.com/sites/default/files/images/banners/aha4Tpuzzle.jpg