And then right from Boeing's own web page:
707 Family
Boeing 707 prototype, the model 367-80
The first commercial 707s, labeled the 707-120
the 720 series, which was lighter and faster with better runway performance.
the larger 707-320 Intercontinental
Military Derivatives
another aircraft that traces its ancestry to the 707 prototype is the U.S. Air Force KC/C-135 tanker-transport/cargo airplane.
The KC/C-135 series was initially designated within The Boeing Company as the model 717.
Additionally, three 707-120s plus two 707-320Bs, designated VC-137s, were delivered to the Military Airlift Command for transporting high government officials. These 707s transported the President for more than 30 years
Recent military applications of the 707 are the E-3 AWACS and the E-6 used by the U.S. Navy for submarine communications.
When the 707 production line was closed at the end of May 1991, Boeing had sold 1,010 of all types (not counting the KC-135 series).
SO, what did Tex do, where did he do it, when, and what was he in? What was the last 707/135 airframe to roll off the Boeing production line and who has it today?