http://www.viewzone.com/day9.html
http://www.kstrom.net/isk/maps/houses/tipi.html
http://pages.prodigy.net/jzeller/storyrobe/srobe.htm
http://www.pbs.org/lewisandclark/native/sho.html
http://www.pbs.org/lewisandclark/inside/saca.html