The U.S. Air Force XC-119A <i>Flying Boxcar</i> (XC-82B, 45-57769, c/n 10139) in flight. Note the wing tip tanks.
U.S. Navy
1949
<a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/department_arch.html">U.S. Navy All Hands magazine</a> <a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/archpdf/ah194908.pdf">August 1949</a>, p. 36.