Humani generis, encyclical letter. Author Catholic Church. Pope [1939-1958: Pius XII]. Place of Publication Washington, DC Publisher NCWC Number of Pages 25 Subjects Authority. Encyclicals. Location No. dc4 PCF File NCWC PCF Record Number 559 Notes Contains Discussion Club Outline by Rev. Joseph C. Fenton, S.T.D. Three copies Read more about Humani generis, encyclical letter.