- 1962[subject unknown]Independent
 - 1963[subject unknown]Independent
 - 1964[subject unknown]Independent
 - 1965[subject unknown]Independent
 - 1966[subject unknown]Independent
 - 1967[subject unknown]Independent
 - 1968[subject unknown]Independent
 - 1969[subject unknown]Independent
 - 1970[subject unknown]Independent
 - 1971[subject unknown]Independent
 - 1972[subject unknown]Independent
 - 1973[subject unknown]Independent
 - 1974[subject unknown]Independent
 - 1975[subject unknown]Independent
 - 1976[subject unknown]Independent Investigators
 - 1977[subject unknown]Independent
 - 1978[subject unknown]Independent
 - 1979[subject unknown]Independent
 - 1980[subject unknown]Independent
 - 1981[subject unknown]Independent
 - 1982[subject unknown]Independent
 - 1984[subject unknown]Independent
 - 1985[subject unknown]Independent
 - 1986[subject unknown]Independent
 - 1987[subject unknown]Independent
 - 1988[subject unknown]Other Research Personnel
 - 1990[subject unknown]Library Readers: General
 - 1991[subject unknown]Library Readers: General
 - 1992[subject unknown]Library Readers: General
 - 1993[subject unknown]Library Readers
 - 1995[subject unknown]Library Readers