The officers have realized that decoding the map you picked up at Camp Dubois requires fluency of a level that cannot be realistically expected of the various dialects on your journey. Whereas one or two of you may know some Lakota, you probably don’t know all of the eight dialects needed to decipher the map.
Luckily, while leaving the Yellowstone River, the expedition made a trade with the local tribe: 56 peace medals for the rent of their best translator for the duration of the journey – Ing Wrish. Given some time and sustenance, Ing will be able to help you understand the map … but don’t overload him with too many things to translate at once.
As you reach each waypoint, you will need to determine the name or alias of this stop (hint: it will a major stop along the L&C Expedition route) and use this to help Ing resolve that portion of the map. There will be seven items to translate at each of the eight stops for a total of 56 items (one for each peace medal!)
To illustrate how this works, here is the solution for WAYPOINT 1
Location: Camp Dubois, Wood River (IL)
Alias: INDEPENDENCE CREEK
AMPGQSBPY QKYAT CVDFUCGL
Run each item INDIVIDUALLY through a Keyed Vigenere cipher.
Cipher: Keyed Vigenere
NXNAPLQNV PBBEQ TQJCRTPW
Now, run each item INDIVIDUALLY through a Playfair cipher.
Alphabet Key: INDEPENDENCE CREEK
Translate the letter “I” into “C”
Encode double letters
EVERYBODY NEEDS SOMEBODY
When you reach each Waypoint, you will be given a set of seven items and a riddle along with the 6ign for you to use to decipher the map. Good luck.