- 1946[subject unknown]Research Assistants
- 1947[subject unknown]Research Assistants
- 1949[subject unknown]Beginners
- 1956[subject unknown]Independent
- 1959[subject unknown]Independent
- 1960[subject unknown]Independent
- 1961[subject unknown]Independent
- 1962[subject unknown]Library Readers
- 1963[subject unknown]Independent
- 1964[subject unknown]Independent
- 1966[subject unknown]Library Readers
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- 1982[subject unknown]Library Readers
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- 1985[subject unknown]Library Readers