The Libraries has a list of American Women's History Resources with links to many interesting items, including the National American Woman Suffrage Association Collection at the Library of Congress, which includes items of the famous suffragette.
Also of interest would be these items, a few among the many in the Libraries collections:
Anthony, Susan B. (Susan Brownell), The trial of Susan B. Anthony, with an introduction by Lynn Sherr. Amherst, N.Y. : Humanity Books, 2003.
Baker, Jean H., Sisters: the lives of America's suffragists. 1st ed. New York : Hill and Wang, 2005.
Barry, Kathleen. Susan B. Anthony: a biography of a singular feminist. New York: New York University Press, c1988.
Edwards, G. Thomas. Sowing good seeds: The Northwest suffrage campaigns of Susan B. Anthony. Portland, Or.: Oregon Historical Society Press, c1990.
Felder, Deborah G., The 100 most influential women of all time: a ranking past and present. Secaucus, N.J. : Carol Pub. Group, c1996.