Riverbank Publications

The Riverbank Publications is a series of pamphlets written by the people who worked for millionaire George Fabyan in the multi-discipline research facility he built in the early 20th century near Chicago.

The publications on cryptanalysis,[1] mostly written by William Friedman, with contributions from Elizebeth Smith Friedman and others, are considered seminal in the field.

[2] In particular, Publication 22 introduced the Index of Coincidence, a powerful statistical tool for cryptanalysis.

The Riverbank Publications dealt with many subjects investigated at the laboratories.

The ones dealing with cryptography[3] began with number 15,[4] : p. 374 ff  and consists of:[5][6] Except as noted, the above publications were written by William F. Friedman and were published by George Fabyan's Riverbank Laboratories in Geneva, Illinois.