It seems the first Air Force One has been found and is in the process of being restored near Tucson, Arizona. It's a Lockheed Constellation, "Columbine II," used by President Eisenhower.
You may wonder if there was a "Columbine" that preceded this plane. Yes, there was. The first Columbine was used by Eisenhower when he was the commanding general of NATO. It resides at the Pima Air and Space Museum, just south of Davis-Monthan AFB in Tucson. It's nearly identical to Columbine II. Here is a picture I took of that aircraft:
And here is a video of Columbine II, the first Air Force One. I thought you might enjoy seeing it.
John
https://www.youtube.com/watch?v=ehwvZXVKmPU
You may wonder if there was a "Columbine" that preceded this plane. Yes, there was. The first Columbine was used by Eisenhower when he was the commanding general of NATO. It resides at the Pima Air and Space Museum, just south of Davis-Monthan AFB in Tucson. It's nearly identical to Columbine II. Here is a picture I took of that aircraft:

And here is a video of Columbine II, the first Air Force One. I thought you might enjoy seeing it.
John
https://www.youtube.com/watch?v=ehwvZXVKmPU