21. Letter from Maxine Singer to Roy Curtiss III Creator: Singer, Maxine Date: 3 June 1977 Genre: Letters (correspondence)
22. Letter from Maxine Singer to U.S. Senator John H. Chafee Creator: Singer, Maxine Date: 31 March 1977 Genre: Letters (correspondence)
23. Letter from Maxine Singer to London Ganning Creator: Singer, Maxine Date: 13 August 1979 Genre: Letters (correspondence)
24. Letter from Maxine Singer to Mary Lasker Creator: Singer, Maxine Date: 26 July 1993 Genre: Letters (correspondence)
25. Letter from Maxine Singer to James D. Watson Creator: Singer, Maxine Date: 4 December 1964 Genre: Letters (correspondence)
26. Letter from Maxine Singer to Carolyn E. Kemp Creator: Singer, Maxine Date: 27 November 1978 Genre: Letters (correspondence)
27. Letter from Maxine Singer to Kathleen K. Schmitz and Karl F. Johnson Creator: Singer, Maxine Date: 27 November 1978 Genre: Letters (correspondence)
28. Letter from Maxine Singer to Donald S. Fredrickson Creator: Singer, Maxine Date: 5 October 1977 Genre: Letters (correspondence)
29. Report on attendance at the Symposium on Nucleic Acids in Hyderabad, India Creator: Singer, Maxine Date: [January 1964] Genre: Reports
30. Letter from Maxine Singer to Howard H. Hiatt Creator: Singer, Maxine Date: 28 November 2000 Genre: Letters (correspondence)