Title: Who was who in American history-science and technology
Description: Approximately 9500 biographical entries to prominent deceased Americans.  Much of the information was taken from last entry that appeared during the person's lifetime.  Covers colonial days to mid-1973.  Each entry gives life and death information, personal, educational, and professional details.
Subjects: Scientists, Engineers, Biography, History, Science, Technology
Places: United States
Time periods: 20th century