I was in Tool Design, mainly shipping and in plant handling. Some DC-10s could carry a spare engine inboard of one of its engines to ferry it from point A to point B. We always wondered what the passengers thought when they saw it. I did the master for that sometime in 1971 or 1972.
Prior to Douglas as it was when I joined, I worked at DeHavilland Aircraft Canada.
Both these companies have gone. The whole plant of McDonnell, later Boeing has been razed to the ground.
DeHavilland is now Bombardier.