This morning we saw the first half of Reel Injun, a film about depictions of Aboriginal peoples in Hollywood. Above I have posted an interview with Jesse Wente (featured in Reel Injun) discussing the portrayal of Tonto in the most recent 2013 Lone Ranger film.
The non-historical costume worn by Tonto was based on a non-historical Native American painting by Kirby Sattler, seen here.