Question: where are the adler letters?
Answer: Adler Letter 2. Area: Milner Outpost. Location: Foot of the tower. Adler Letter 3. Area: Harden Tower. ...  Adler Letter 4. Area: Main Street. ...  Adler Letter 5. Area: Facilities. ...  Adler Letter 6. Area: Discovery Cliffs. ...  Adler Letter 7. Area: U.S. Army RCS. ...  Adler Letter 8. Area: Bridge Stand. ...  Adler Letter 9. Area: Campgrounds.