Ex N771PA (Clipper Donald McKay), converted to freighter in 1975. It would be better to see it in Pan Am livery.
<a href="//commons.wikimedia.org/wiki/User:N509FZ" title="User:N509FZ">N509FZ</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>