Willa Cather Bibliography Database
http://www.willacatherbib.org/
A comprehensive, searchable database of books on Willa Cather and her works.
The Willa Cather Archive
This fantastic site contains e-text versions of a substantial portion of Cather's writings, including interviews, speeches and public letters. It contains full text, scholarly versions of O Pioneers! and My Antonia; it also contains e-texts of two biographical sketches and a full biography. Other fun sections contain audio and movie clips of Cather.
