The new year begins with six encrypted postcards from the 19th century. They were provided to me by the National Cryptologic Museum. Can a reader decipher them?

In 1905 a woman named Elena Moga received an encrypted postcard. Can a reader break this cryptogram?

In 1906, an unknown person sent two beautiful postcards encrypted in a pigpen cipher to a man in Kent. Can a reader solve these two postcard cryptograms?

Two more encrypted postcards wait to be solved. Can a reader help?

A number of encrypted postcards from different times and places wait to be solved. Can a reader help?

Three encrypted postcards from San Francisco are discussed in an internet forum. The solutions still seem to be unknown. Can a reader of this blog help?

Today I’m going to introduce two encrypted postcards I have recently found on a postcard blog. They are completely different from each other, but both still wait to be solved.

In 1904, a Bavarian theology student received a postcard written in a shorthand. Can a reader decrypt it?

In the early 20th century, an unknown person sent three encrypted postcards to a woman in Heidelberg, Germany. Can somebody break these cryptograms?