Walter Cox spoke three Indian dialects, and it was not uncommon for Indians to ride up by the hundreds on horseback to listen to him preach from the east steps. In 1876 he was called as a special missionary to the Indians. They considered him a trusted friend as well.

Painting by a great grandson, Owen Richardson
(Courtesy of Carl Cox who maintains the family website at http://www.oscox.org/fwcox/fwhistoryindex.html)