If you are interested in supporting the mission of the South Platte Valley Historical Society, One way to do that is to become a member. There are different levels of membership as the following membership form shows. Membership in the Tallow River Trappers, a group of fur trade re-enactors and a department of the society is in addition to membership in the South Platte Valley Historical Society. Download the application form file, print it out and mail it to the address on the form. In completing the form the rates in the left column are for SPVHS only membership and the rates in the right column are for both SPVHS and TRT membership.