Riverbank, Geneva Ill. Riverbank Laboratories Department of Ciphers 1919. First Edition. 50 pages 22.2 cm x 28.7 cm. Publisher's stiff tan wrappers with black printed front cover duplicating title page. No statement of limitation. A bright copy noting some minor soiling to the rear cover. Fine. Wraps. 
Not normally included in the so-called 'Riverbank Publications' which included numbers 15-22, this is one example of other work published by Riverbank in related fields.
Shulman, An Annotated Bibliography of Cryptography, 1976, p83 (which attributes authorship to H. O. Nolan).