- Text available free via Project Gutenberg
- Willa Cather Archive - O Pioneers! page
- The Walt Whitman poem, Pioneers! O Pioneers!, which must surely have been an inspiration for Cather's title.
- Wikipedia entry for O Pioneers! Mentions this fabulous quote: In a 1921 interview for Bookman, Willa Cather said, "I decided not to 'write' at all, - simply to give myself up to the pleasure of recapturing in memory people and places I'd forgotten."
- Rock band named itself O Pioneers, creating for itself a hipness deficit that is hard to overcome, even with cool black T-shirts with open jack-knife image that you can order here.