I adore these beautiful units! All photos taken by me!
6900 - Kenefick Park, Omaha, Nebraska The first DDA40X built
6913 - Museum of the American Railroad, Frisco, Texas
6922 - Cody Park, North Platte, Nebraska
6930 - Illinois Railway Museum, Union, Illinois

6938 - North Little Rock, Arkansas Sits in front of Jenks Locomotive Facility
6944 - National Museum of Transportation, St Louis, Missouri
NOT SEEN:
6901 - Ross Park, Pocatello, Idaho
6911 - Mexico Museum of Technology, Mexico City - doubt I will EVER see this one
6915 - RailGiants Train Museum, Fairplex, Pomona, California
6916 - Utah State Railroad Museum, Ogden, Utah
6936 - Railroading Heritage of Midwest America, Silvis, Illinois