Three shorthand postcards, written in Swedish, Volapük and German, wait to be solved. Can you decipher any of these?

In 1922, a man from Luxemburg sent a postcard to a recipient living in the famous brandy town of Cognac, France. The message on the postcard consists of only seven letters. Can a reader find out what it means?

At first sight, an encrypted postcard from 1909 looks like many others I have introduced on this blog. However, the encryption method used is unusual.

In 1913, an unknown person sent an encoded postcard to a man living in the then German town of Nieder-Jeutz. It is not possible to decipher this card unambiguously, but a few guesses can be made.

An Austrian museum association has asked its Twitter followers to help deciphering an old postcard. So far, no solution has been tweeted. Can a reader of this blog solve this mystery?

In 1905 a certain Miss Rhodes from Colchester, UK, received an encrypted postcard signed with “C.Y.K.”. Can you decipher it?

A Reddit user has posted a postcard from Sweden written in 1910. Can a reader decipher it?

Here’s a postcard that was sent from the Isle of Wight to London in 1905. Can a reader decipher it?

In 1901 an unknown person sent an encrypted postcard from Iserlohn, Germany, to nearby Arnsberg. Can a reader decipher it?