Is the Internet available at your school or public library?
Check out these sites:
Or use a multi-search engine (try dogpile.com). If you find a useful site, be sure to add it to your Favorites, so you can return to it easily.
Additional References:
Native America in the 20th Century: An Encyclopedia, ed. Mary B. Davis.
Encyclopedia of North American Indians, ed. Frederick E. Hoxie.
Ojibwe language, A Concise Dictionary of Minnesota Ojibwe by John D. Nichols and Earl Nyholm.
Adult, Native Americans: Portrait of the Peoples, ed. Duane Champagne.
Children, The Encyclopedia of Native America by Trudy Griffin-Pierce.
Adult, Atlas of the North American Indian, Carl Waldman and Molly Braun-Waldman.
Statistics, Statistical Record of Native North Americans, edited by Marlita A. Reddy.
Literature, Smoke Rising: The Native North American Literary Companion.
Law, U.S.; American Indian Law Deskbook, ed. Nicholas J. Spaeth.
Source: Native American Books at http://indy4.fdl.cc.mn.us/~isk/books/all_idx.html#biography