The American Indian girl's name is Minnehaha, the tragic heroine of Henry Wadsworth Longfellow's 1855 poem, "The Song of Hiawatha."
Vitaphone production reel #5137.
The Twenty Eighth Looney Tunes Cartoon To Be Released
We hear the (imitation) singing voice of Bing Crosby. A dog looks and sings like Rudy Vallee. The title song (by Joseph A. Burke and Al Dubin) also makes reference to Russ Columbo, but we don't hear him mimicked or see him caricatured.