The idea was to help the Topeka Air Combat Museum keep their Spooky AC-47 gunship flying. They kept it in airworthy condition and participated in air shows to keep history alive.
Read more about Spooky and its history on Wikipedia: https://en.wikipedia.org/wiki/Douglas_AC-47_Spooky
You might also be interested in a SkyCart with WWII nose art. How about these here: https://myskycart.com/noseart1/