Photo taken August 20, 1967 by a good friend of mine who was a United Airlines Stewardess (called Flight Attendant now, but certainly not then).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/72105154@N00">John Atherton</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/gbaku/2091900770/">Photo from cockpit of United Airlines flight from Portland, Oregon (USA) to New York City, 1967</a>