ciphers

Describes famous cases involving codes and ciphers, explains different ciphers, and tells how to create your own.

Presents an illustrated explanation of twenty-five codes that can be used to send secret messages.

Discusses a variety of codes and explains how to send and decode messages.

Explains and illustrates twenty-nine codes which can be used to send secret messages or as brainteasers.

A guide to every type of coded communication that includes information on what certain codes have been used for, how professionals break those codes, what codes were used by ancient cultures, and other related topics.

Explains how to make and crack codes, examining several famous ones including the Playfair and the Pigpen cipers, and describing other types of encoding such as invisible ink.

Presents a guide to codemaking, codebreaking, and their role in history, describing different types of codes and ciphers, discussing codebreaking and concealment techniques, and including brief stories about exciting moments in the history of the art.

As her stepbrother, Joshua, continues to decipher the meaning of the cryptic murder notebooks, Rose wonders if the recent death of her former best friend may hold a clue to the disappearance of Rose's mother and Joshua's father.

Five years after seventeen-year-old Rose's mother and Joshua's father disappeared, when the step-siblings reconnect in London, Rose witnesses two murders which she fears are linked to coded notebooks Joshua has found and his investigation of the disappearance.

Describes how African Americans made coded quilts and how they used them to escape on the underground railroad.