1. Letter from Allen G. Marr to Joshua Lederberg Creator: Marr, Allen Gerald, 1929-2008 Date: 4 July 1950 Genre: Letters (correspondence)
2. Letter from Allen G. Marr to Joshua Lederberg Creator: Marr, Allen Gerald, 1929-2008 Date: 5 September 1952 Genre: Letters (correspondence)
3. Letter from Allen G. Marr to Joshua Lederberg Creator: Marr, Allen Gerald, 1929-2008 Date: 2 November 1959 Genre: Letters (correspondence)
4. Bibliography on Spectrophotometry of Turbid Suspensions Creator: Marr, Allen Gerald, 1929-2008 Date: September 1960 Genre: Bibliographies
5. Letter from Allen G. Marr to Joshua Lederberg Creator: Marr, Allen Gerald, 1929-2008 Date: 29 September 1960 Genre: Letters (correspondence)
6. Letter from Alvin J. Clark, Allen G. Marr, American Society for Microbiology. Northern California Branch to R. W. Sarber [Letter to the Editor of ASM News] Creator: The American Society for Microbiology. Northern California BranchClark, Alvin J.Marr, Allen Gerald, 1929-2008 Date: 7 February 1968 Genre: Letters (correspondence)