This time period is a little late for me, but it is still interesting. In truth the Mountain Man period or its hey day as far as the Rendezvous is conserned, only lasted 25 years, from 1825 to 1840 ad.
WARNING! Much of the information in this video is pure fiction. I have no idea when this video was made, but much of the information is outdated research wise. I knew more than this 20 years ago, and I can offer no explanation for the misinformation in this documentary.