Information about Duane M. Rumbaugh’s family, education, and career is presented in the first section. In a second section, information about Rumbaugh’s publications from 1962 to 2015 is presented, and details about his early research publications are provided. Although a few of his early publications involved applied research with humans, most of his early programmatic research involved various non-human primates, modifications of research equipment, and development of new measures of learning sets. Implications of the early research for later research also are discussed.