Humanist Manifesto I
- Draft written by Roy Wood Sellars.
- http://ditext.com/rwsellars/humanist.html

Roy Wood Sellars: Philosopher of Religious Humanism
- Contains a biography of Roy Wood Sellars by W. Preston Warren of Bucknell University, an article by Edwin H. Wilson describing the history of the Humanist Manifesto, and a brief note by Roy Wood Sellars, "Naturalistic Humanism."
- http://www.harvardsquarelibrary.org/unitarians/sellars.html

Bibliography of Roy Wood Sellars
- Comprehensive bibliography of Roy Wood Sellars (1883-1973), an early defender of emergent materialism, and the composer of the draft of the Humanist Manifesto.
- http://www.ditext.com/rwsellars/bib-rws.html