Postcard-Plymouth-bar

Two postcards from the early 20th century are written in Morse code or something similar. One of these cryptograms is still unsolved.

Postcard-San-Francisco-bar

In 1905, an encrypted postcard was sent from San Francisco to Paris. Can a reader break it?

Postcard-Semlin-bar

Today’s crypto mystery is about a postcard written to a noblewoman in 1914. Can a reader solve it?

Postcard-New-York-bar

Eight words and a question mark. That’s the content of an old encrypted postcard from New York City. Can a reader decipher it?

Postcard-CH-Hamburg-bar

A postcard from 1885 was written in a strange code. Can a reader decipher it?

Postcard-Bristol-bar

In the last decade of the 19th century, an unknown person sent three encrypted messages from a place named Bristol. Can a reader decipher these messages?

Postcard-Hanford-bar

My readers are pretty good at solving encrypted postcards. However, the two specimens I am going to introduce today look pretty hard to decipher, as the messages are pretty short.

Postcard-Newton-Iowa-bar

A postcard from 1906 is written in a combination of Morse code, numbers, and letters. Can a reader solve this unusal cryptogram?

Postcard-US_morse_Bar

An encrypted postcard from the 1870s is written in a strange code. Can a reader solve it?

Postcard-Stand-Rock-bar

A postcard from 1909 bears an encrypted message and an unusual spelling of a remarkable rock. Can a reader solve these mysteries?