I don't believe that Crash-Test Dummies can account for the Roswell bodies.
Check out this old issue of Popular Mechanics, the page of which in the link below shows a parachute-related experiment (years before Roswell) that involved a very small dummy/doll with what looks like a large bald head.
Note, too, the link to Wright-Field (now Wright-Patterson Air Force Base), which has long been associated with tales of crashed UFOs and small alien bodies.
Does it prove anything? Nope. Do I think it's, um, "interesting" and worthy of further study? Maybe!
Here's the link, so make up your own mind!