The majority of the Bison are made by West Wind (From the Cowboy Wars range), with a couple supplied by Tabletop. The riders are converted from figures supplied by Dixon, Tin soldier UK and Navigator Miniatures. The Tin soldier UK figures are from their Sarmatian range. They are wearing scale armour made from animal horn, which is I think very appropriate for Bison Riders.
Miniatures from IAN NOTTER's collection, painted by IAN NOTTER