Tasha Peelan found this gallery of letters from Vietnam that’s useful for an idea that we may/might not progress: http://www.vietvet.org/letters.htm.
Kerry and I have been trying hard to steer Oisin and Tasha away from writing a fanfiction about the secret love affair between Elias and Chris. However one good idea did come from this concerning writing secret messages on various materials. These messages could be between platoons or other people (or creatures) affected by the war. This also relates to Kerry’s first idea about writing letters home for an artifact.