http://www.dnr.state.oh.us/wildlife/Home/fishing/turtle/turtle/tabid/6119/Default.aspx
ref for starting
http://www.texastastes.com/p239.htm#1450
nother basking trap: http://www.luresext.edu/aquaculture/turtles.htm
overcollection (part) http://stonelab.osu.edu/_media/stonelab/courses/51/gibbons-declining.pdf
turtle trade: http://www.graptemys.com/turtle_trade.doc