1. Letter from Sol Spiegelman to Guido Pontecorvo Creator: Spiegelman, Sol, 1914-1983 Date: 3 January 1948 Genre: Letters (correspondence)
2. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 11 July 1945 Genre: Letters (correspondence)
3. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 14 February 1946 Genre: Letters (correspondence)
4. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 15 September 1945 Genre: Letters (correspondence)
5. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 11 December 1945 Genre: Letters (correspondence)
6. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 19 November 1945 Genre: Letters (correspondence)
7. Letter from Sol Spiegelman to Van R. Potter Creator: Spiegelman, Sol, 1914-1983 Date: 12 December 1947 Genre: Letters (correspondence)
8. Letter from Sol Spiegelman to Tracy M. Sonneborn Creator: Spiegelman, Sol, 1914-1983 Date: 6 November 1950 Genre: Letters (correspondence)
9. Letter from Sol Spiegelman to Tracy M. Sonneborn Creator: Spiegelman, Sol, 1914-1983 Date: 22 September 1947 Genre: Letters (correspondence)
10. Letter from Sol Spiegelman to Tracy M. Sonneborn Creator: Spiegelman, Sol, 1914-1983 Date: 9 December 1947 Genre: Letters (correspondence)