My users ure usually very successful when it comes to breaking encrypted postcards. Anyway, the one I’m going to introduce today might be a tough challenge.

Blog reader Karsten Hansky has provided me a nice encrypted postcard from 1954. Can a reader decipher it?

In 1914, a man sent an encrypted postcard from Kiel to Hannoversch Münden. Contrary to all other encrypted postcards I know, this one was written with a typewriter.

In 1920, IRA member Patrick James McGuire received an encrypted Easter postcard. Does it contain a love message? Or is the content related to the Irish War of Independence?

In 1916, a man living in Aschersleben, Germany, received an encrypted postcard. Can a reader decipher it?

Earlier this week, I blogged about two encpostcards sent to a Bavarian princess. My blog readers solved all the mysteries about these documents.

In 1890, a year after her wedding, a Bavarian princess received two encrypted postcards. Can a reader decipher them?

In 1931, a woman from Bonn, Germany, received an encrypted postcard from Switzerland. Can a reader break this cryptogram?

The latest issue of the ACA newsletter “The Cryptogram” introduces an encrypted postcard. The cipher used is unusual. Can you solve it anyway?

In 1913 a man sent an encrypted postcard from Jena, Germany, to his lover in the Hamburg area. Can a reader decipher this cryptogram?