Roswell Report: Case Closed 

Fig. 35. Rough treatment and parachute failures during balloon drops often caused damage to the hands of the dummies.  This detail, "beings" with "four fingers," was related by two witnesses as a distinguising feature of the Roswell aliens.  (U.S. Air Force photo)

McAndrew, James. The Roswell Report :Case Closed. Published by the Headquarters United States Air Force through the U.S. Government Printing Office, Washington D.C. 231 p., 1997.