"[1] He wrote many books about Indian tribes, especially the Sioux and Pawnee plus a life of the Cheyenne warrior and historian, George Bent.

He led a reclusive life, and as he grew older, he relied on a powerful magnifying glass to aid his reading.

Hyde, with extensive contributions from Bent, claimed to be the ghost writer for Grinnell's classic book The Fighting Cheyennes.

Grinnell and Hyde are both distinguished for emphasizing the importance of Indians in the history of the Western frontier.

Life of George Bent had to wait for 50 years before being published, but it is invaluable as the most detailed eye-witness account we have from the Indian point of view about the Cheyenne wars with the United States in the 1860s.