Coba jelasin Karya dan publikasi dari Elizebeth Smith Friedman dong

dibuat dengan William F. Friedman, Riverbank Publication Nomor 21, Methods for the Reconstruction of Primary Alphabets, 1918, in Methods for the Solution of Ciphers, Publications 15-22, Rufus A. Long Digital Library of Cryptography, George C. Marshall Library, 1917-1922,

Untuk melihat referensi lain http://marshallfoundation.org/library/wp-content/uploads/sites/16/2014/09/Friedman_Collection_Guide_September_2014.pdf