Danny and the Dinosaur

Here we have a page from a very popular children's easy reader, Danny and the Dinosaur, by Syd Hoff. At this point in the story, Danny is inside a museum, which I presume to be a Natural History Museum, where

He sees Indians.
He sees bears.
He sees Eskimos.

American Indians are often placed in Natural History Museums, set amongst the animals, which suggests our oneness with nature??? Or with the dinosaurs, which suggests our extinctness???