Photos of the decoding in question: https://dbcooper.com/wp-content/uploads/2018/01/DBC-Letter-5-FBI-WA-DC-WFO-DBC-WAPO-Letter-Mailed-12-15-71J3-1-300x147.jpg

Photos of the decoding in question: https://dbcooper.com/wp-content/uploads/2018/01/DBC-Letter-5-FBI-WA-DC-WFO-DBC-WAPO-Letter-Mailed-12-15-71J3-1-300x147.jpg https://dbcooper.com/wp-content/uploads/2018/01/DBC-Letter-5... https://dbcooper.com/wp-content/uploads/2018/06/DBC-Letter-6-3-28-72-Typed-Note-Message-CodeB.jpg https://dbcooper.com/wp-content/uploads/2018/06/DBC-Letter-6... Definitely nothing obvious to this layperson. Edit: just noticed the 3 71s in the first image, ok that's a little interesting.