The research materials selected for use in the articles presented in Native American/First Nations History are generally dived into two specific categories--general research (used primarily for background) and Topical (subject specific--as in the case of the Ely Parker article). While I tend to use general research to formulate the genesis of my articles, the primary focus has always been on the topical. What follows is a list of a couple sources that I have found most useful.
Bury My Heart at Wounded Knee (Dee Brown, New York: Henry Holt and Company, 1970)
This research has shown the struggles of Native Americans in the wake and American expansion. Not only does it contain first hand references, but it moves beyond the scope of a traditional monograph and draws the reader into the story of the Native American.
Indian Oratory: Famous Speeches by Noted Indian Chieftains. (W.C. Vanderwerth, Norman: University of Oklahoma Press, 1971).
A great source for original first-person accounts. This work contains the speeches of well known figures like Red Jack and Chief Pontiac. Many of these speeches were recorded by representatives of the American government.
This represents only a sample of the sources that are readily available on the subject of Native Americans. As I present more explorations on the subject of Native Americans, I will bring more reviews of interesting books.