Books, Bios, & More - OKGenWeb has a listing of all sorts of great items here.

Marietta Monitor Extracts

The Daily Oklahoman archives

Chronicles of Oklahoma - Oklahoma's Historical Society and OSU Library Electronic Publishing Center, it has a search feature that's a big help.

Oklahoma Periodicals Index - The Oklahoma Periodicals Index provides a searchable online index to articles about people, places, history, culture, wildlife, and natural history in the state of Oklahoma with some coverage outside the state. The index consists of four key periodicals: The Chronicles of Oklahoma, Oklahoma Today, Outdoor Oklahoma, and Persimmon Hill.