Cryptographie polygonale.
Contributors: George Fabyan Collection (Library of Congress)
Publisher: [s.n.]
Published: 1898
Place of publication: Paris
Language: fre
Subjects: Cryptography.; Ciphers.; Signs and symbols.
Notes: Cover title.
"1899. 128, avenue d'Orléans, à Paris"--p. [1] of 1899 volume.
Two holograph notebooks, dated Juin 1898 (label on cover: "b ciphers box") and 10 janvier 1899 (label on cover: "a ciphers box a").
LC copy is item no. 250 of the George Fabyan Collection.