1. Sexual Process and Genetic Structure of Bacteria [Russian version] Creator: Lebedev, D. B. Date: 1948 Publisher: Undetermined Genre: Articles
2. Postcard from Nicolai D. Ierusalimski to Joshua Lederberg Creator: Ierusalimski, Nicolai D. Date: 31 December 1959 Genre: Postcards
3. Letter from K. V. Kossikov to Joshua Lederberg Creator: Kossikov, K. V.Rossiĭskai︠a︡ akademii︠a︡ nauk Date: 12 January 1958 Genre: Letters (correspondence)
4. Letter from K. V. Kossikov to Joshua Lederberg Creator: Kossikov, K. V.Rossiĭskai︠a︡ akademii︠a︡ nauk Date: 18 July 1957 Genre: Letters (correspondence)
5. Postcard from Ralph A. Lewin to Joshua Lederberg Creator: Lewin, Ralph A. Date: February 1959 Genre: Postcards
6. Letter from A. I. Oparin to Joshua Lederberg Creator: Oparin, A. I. (Aleksandr Ivanovich), 1894-1980Rossiĭskai︠a︡ akademii︠a︡ nauk Date: 16 July 1958 Genre: Letters (correspondence)