If you find a source that is not available at the Centennial Library, you can look it up on OhioLink. OhioLink typically takes 3-4 days, so it's a great resource if you get started early enough.
OhioLink search can be found here.

Biographical and Historical analysis is a staple of any critical analysis. It is vital for most papers that you understand the period in which a text was written and the background of the author.
This kind of research is very specific to your topic, but here are some sources to get you started in the right direction!
Great American Authors Since 1650 (DVD)
by
Scott Gordon
Journey Through Despair, 1880-1914: Transformations in British Literary Culture
by
John A. Lester, Jr