Lederberg, Esther M. and Morse, M. L. to
Luria, S.; Delbrück, M.; Wollman, E.
July 15, 1952

For photographs of Max Delbrück, see http://www.esthermlederberg.com/CSHLIndex.html AND
http://www.esthermlederberg.com/EImages/Archive/PhotoslidesIndex.html