 About the same time a commission for five historical portraits of Western men with horses culminated in "Lone Cowboy," which was his trademark work for a long time.In the early Sixties he began to send bronzes to juried New York shows where they were accepted, earning him membership in the National Sculpture Society, the Salmagundi Club, the Society of Animal Artists and other prestigious groups.When the Cowboy Artists of America formed in Oklahoma, Scriver was invited to join them and then the National Academy of Western Art.