The Zodiac’s 408 Cipher:

Video: Let’s Crack Zodiac” – Ep. #3: The 408 w/ David Oranchak

The Zodiac’s 340 Cipher:

Read the ZodiacKillerFacts article The 340: Dead Ends

Video: The Unsolved Zodiac 340 Cipher: Features or Phantoms? w/ David Oranchak at the 2017 Symposium on Cryptologic History in Laurel, MD 

Video: What is Zodiac’s 340-Character Cipher? w/ David Oranchak at the annual convention of the American Cryptogram Association in Hendersonville, NC * Video:

The Zodiac’s “Mt. Diablo Code”:

The Zodiac’s “My Name Is” Cipher:

Video: “The Zodiac Ciphers: What Do We Know?” w/ David Oranchak