https://www.youtube.com/watch?v=LYTK6QicICo
The (Semi) Solved Mystery Of The Toynbee Tiles https://www.youtube.com/watch?v=TLMVjfKg35M
History is full of various puzzles and codes.
Cicada 3301: An Internet Mystery https://www.youtube.com/watch?v=I2O7blSSzpI
https://fusionanomaly.net/agrippa.html
https://desertshapes.blogspot.com/search?q=cryptic+notes+and+memes
