Englesberg, Ellis Correspondence
  1. Engelsberg, Ellis to Lederberg, Esther M.: February 16, 1960
    2. .
  2. Lederberg, Esther M. to Englesberg, Ellis: April 6, 1960
    3. .
  3. Lederberg, Esther M. to Engelsberg, Ellis: (circa) April 6, 1960