This report presents data in tabulated form. The survey covered all such institutions in the country known or believed to have allocated at least $100,000 to intramural R&D performance, and contains data on scientists, engineers, and technicians employed, and on current and capital expenditures associated with the conduct of research and development. Summary data, classified by type and size of organization and by state, are presented. Highlights in the report show: (1) independent nonprofit institutions employed over 26,000 scientists and engineers in October 1973, and 88 percent of these were primarily engaged in research and development; (2) R&D expenditures of independent nonprofit institutions during 1973 totaled $1,006 million, with the Federal Government being the source of 69 percent of the funds; (3) of the total R&D expenditure, the largest amount was allocated to the life sciences--37 percent, engineering for 28 percent, and the social sciences for 14 percent. Technical notes, statistical tables, a reproduction of the covering letter, summary questionnaire, and instructions are presented in the appendices. (Author/EB)