Andrew,
Agree, and have seen it as well.
When I was a kid the original United hangar was still in place on the Des Moines Airport. Those hangars were huge (back then) square hangars with full-length doors on opposite sides. The 247s and later DC-3s would taxi in to the hangar, do the unload and load pax bit, then start up and taxi out. Everyone stayed dry.
The United hangar in Iowa City was torn down only recently. Sad.
Warmest regards,
Rick