A companion volume to "Physicians in the Making: Personal, Academic, and Socioeconomic Characteristics of Medical Students from 1950 to 2000" is presented. Five major types of information are presented: backup, year-by-year statistics for the 46 tables and 16 figures in "Physicians in the Making," including data from 1950 through 1982 and projections for some variables through the year 2000; 24 pages of detailed results of the 1981 Association of American Medical Colleges Delphi survey that resulted in 98 predictions about the characteristics of U.S. medical students; a comprehensive description of the major national sources of information about U.S. medical students and 18 suggestions for maintaining and improving this extensive database; 84 general references and 11 specialized bibliographies listing over 200 sources of information about medical school applicants, students, and graduates from 1950 to 1982; and a 5-page cross-index showing the relationship between 67 tables in this companion volume and the 62 tables and figures in "Physicians in the Making." (Author/SW)