Gentlemen, I applaud (indeed I rejoice) your enthusiasm about Artillery in the First World War, but let's not get all "Night At The Museum" about it... Let Indiana Jones save the world, we're just trying to solve a contradiction.
As Art states, there are two different guns. The camo gun at West Point. And old gray lady Bridget of internet fame - last seen at Aberdeen Proving Ground (and now probably at Fort Lee, VA). They both have been described as the gun to fire the first US artillery rounds in the First World War.
Hoss, I've already noted the ubiquitous photo on the internet of Bridget in Post #22. And I still believe that photo is staged. Let's not forget many historical moments have been staged after they actually happened - for example raising the flag by Marines on Mount Suribachi at Iwo Jima. That famous image is a staged photo, but it is indeed the most well known. I suspect that Bridget gets her reputation from that staged photo seen on the internet.
Hopefully, Art's email to West Point will yield some documented evidence of their gun's provenance. I will then contact the museum at Fort Lee to ask them for their evidence.
In the meantime, let's tap gloves and return to our corners.
PS: I think there is some angle to buy a round of beers here somewhere...