1. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 2 May 1958 Genre: Letters (correspondence)
2. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 9 August 1974 Genre: Letters (correspondence)
3. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 11 October 1974 Genre: Letters (correspondence)
4. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 27 November 1974 Genre: Letters (correspondence)
5. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 4 January 1965 Genre: Letters (correspondence)
6. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 29 January 1975 Genre: Letters (correspondence)