author
Dorothy Crain
An early 20th-century author of educational cipher books, this little-known writer is remembered for turning cryptography into something playful and approachable for young readers. Her surviving work offers a curious glimpse into how codes were taught through reading, writing, and observation.
1 Audiobook
About the author
Dorothy Crain is known for Ciphers for the Little Folks, a short instructional book published in 1916 by the Educational Department of Riverbank Laboratories in Geneva, Illinois. The book was created to introduce children to Francis Bacon's biliteral cipher through simple exercises and games.
The surviving bibliographic record suggests that this is the main work clearly associated with her. Editions and library records also show that Helen Louise Ricketts contributed an appendix on the origin and history of the alphabet, placing Crain's work within a broader educational effort around language, symbols, and secret writing.
Very little confirmed biographical information about Dorothy Crain appears to be readily available today, which makes her a somewhat mysterious figure. Even so, her book has lasted through library collections and public-domain archives, and it still stands out as an unusual, child-friendly introduction to cryptography from the early 1900s.