The Liberator is one of the most beautiful aircraft ever produced. I may be wrong, but I am pretty sure that there were more Liberators made than any other aircraft. Ever.
I read a while back only six complete B-24 aircraft remain worldwide. Many of them were built at Ford's Willow Run plant near Detroit, Michigan. Near the end of World War II, a brand new B-24 was rolling out the door of the Willow Run plant every 56 minutes.
My father was a B-24 pilot with the 90th Bomb Group of the Fifth Air Force in the South Pacific.
The B-24 was a physically demanding aircraft to fly. Landing it often required the physical strength of both pilot and co-pilot. The B-24 carried a crew of ten into combat.
I think it was the most-produced US warplane.
I recall reading that Germany made over 30,000 Me109's and Russia made over 33,000 Il-2's. But I could be wrong.