American Cryptogram Association

The American Cryptogram Association (ACA) is an organization dedicated to the study and enjoyment of cryptograms, which are puzzles that involve encoding and decoding messages. Founded in 1937, the ACA provides resources, publications, and a community for enthusiasts of all skill levels to explore various types of ciphers. Members can share puzzles, techniques, and solutions, fostering a greater appreciation for cryptography. The ACA also promotes educational programs and organizes contests, making it a valuable hub for anyone interested in the art and science of secret writing.