Question: When was the United States Army Colonel died who wrote the Day After Roswell?
Sentence (from "Whitfield Jack"): George Whitfield Jack, Jr., known as Whitfield Jack or Whit Jack (July 10, 1906 – April 23, 1989), was a United States Army colonel in World War II, a major general of the United States Army Reserve, and a prominent attorney in his native Shreveport, Louisiana.
Relevant evidence: No