Links:
[1] http://www.thinkfun.com/shop/product/river-crossing,54,11.htm
[2] http://www.thinkfun.com/sites/default/files/images/pdfs/RCbonus_challenges.pdf
[3] http://www.thinkfun.com/sites/default/files/images/pdfs/RCbonus_solutions.pdf
[4] http://www.thinkfun.com/sites/default/files/images/product_library/rivercrossing/new/River-7020-Sell.pdf
[5] http://www.thinkfun.com/sites/default/files/images/product_instructions_pdfs/River-7020-IN.pdf
[6] http://www.thinkfun.com/sites/default/files/images/product_library/rivercrossing/new/River-7020-HiResSpill.jpg
[7] http://www.thinkfun.com/sites/default/files/images/product_library/rivercrossing/new/River-7020-LoResSpill.jpg
[8] http://www.thinkfun.com/sites/default/files/images/product_library/rivercrossing/new/River-7020-Isl-Logo.pdf
[9] http://www.thinkfun.com/sites/default/files/images/banners/rivercrossing.jpg