Harcourt Algeranoff to Agnes Babicheva and Serge Babichev, 22 May 1961 Unit ID: 909 Date: 22 May 1961
Harcourt Algeranoff to Agnes Babicheva and Serge Babichev, 30 July 1961 Unit ID: 933 Date: 30 July 1961
Harcourt Algeranoff to Agnes Babicheva, Serge Babichev and Mona Babichev, 13 July 1961 Unit ID: 927 Date: 13 July 1961