1. Exobiology: Approaches to Life Beyond the Earth Publication: American Association for the Advancement of Science, 12 August 1960 Subject(s): Biological EvolutionGenetics, MicrobialExobiology Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. What Do We Seek in Space? Publication: Scholastic Book Services, 1965 Subject(s): ExobiologyBiological Evolution Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Signs of Life: Criterion System of Exobiology Publication: MacMillan Magazines, 3 July 1965 Subject(s): ExobiologyBiological Evolution Archival Collection: The Joshua Lederberg Papers (Profiles in Science)