)* "They Brave Death for a Picture: desperate chances taken by the flying camera-men", Popular Science monthly, January 1919, page 18-19, Scanned by Google Books: http://books.google.com/books?id=HykDAAAAMBAJ&pg=PA18* "Army-Lockheed YO-3A Silent Airplane in Vietnam"
)*"They Brave Death for a Picture: desperate chances taken by the flying camera-men", Popular Science monthly, January 1919, page 18-19, Scanned by Google Books: http://books.google.com/books?id=HykDAAAAMBAJ&pg=PA18*"Army-Lockheed YO-3A Silent Airplane in Vietnam"