The Dan H. Pletta Papers includes treatises, transcripts of talks and correspondence dealing with all aspects of the field of engineering, but especially with the role of education in producing a professional engineer, qualifications for practice, the public purpose of engineering, ethics, and whistleblowing. Pletta (1903-1996) was professor of Engineering Science and Mechanics at Virginia Tech (1932-1972) and department head from 1958-1970.