I remember growing up in t

I remember growing up in the sixties watching a series of Disney films (I cannot remember if they were 15 min shorts or full length) that were nature footage set to classical music. No narration, the tone of the music helped tell the story,with clips of flora and fauna of the area. I think they were produced in the fifties. There was one based on the Grand Canyon and another based on the praires of Wyoming plus a couple more mymemory is too vague to recall details of.