What do a P-51B,C,D have in common with a muffin pan?

[Snuffy]

The Mystery of the Mustang and the Muffin Pan

When we had to do some deep digging to find a United Aircraft Products parts catalog for a Mustang oil cooler AirCorps Library researchers turned up some unusual UAP manufacturing history.

aircorpslibrary.com

 

[TARPSBird]

I need to get one of those UAP muffin pans for my daughter-in-law. She likes to bake and she likes vintage stuff.