Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
T. R. Fehrenbach
Theodore Reed "T. R." Fehrenbach, Jr. (January 12, 1925 – December 1, 2013) was an American historian, columnist, and the former head of the Texas Historical Commission (1987-1991). He graduated from Princeton University in 1947 and wrote more than twenty books, including the bestseller "Lone Star: A History of Texas and Texans" and "This Kind of War", about the Korean War. Senator John McCain called this book “perhaps the best book ever written on the Korean War”. Secretary of Defense James Mattis said “There’s a reason I recommended T.R. Fehrenbach’s book...that we all pull it out and read it one more time.”