Mountain Men And The Fur Trade
"This website is an on-line Research Center devoted to the history, traditions, tools, and mode of living, of the trappers, explorers, and traders known as the Mountain Men."
http://www.xmission.com/~drudy/amm.html

That's a good one, Hal.

If you're interested in Hudson Bay Co employees, here's a website for their archives & some biographies. I have found the archivists to be very helpful.

http://www.gov.mb.ca/chc/archives/hbca/biographical/index.html