Ann Katharine Mitchell
Ann Katharine Mitchell was a British cryptanalyst and psychologist who worked on decrypting messages encoded in the Germans’ Enigma cypher at Bletchley Park during World War II.
Ann Katharine Mitchell was a British cryptanalyst and psychologist who worked on decrypting messages encoded in the Germans’ Enigma cypher at Bletchley Park during World War II.
Mary Frances Applebey was an English civil servant and mental health activist.