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Here is an American Rifleman article

https://www.americanrifleman.org/content/the-kimber-rifle-story/

There is this https://en-academic.com/dic.nsf/enwiki/722249

I'm pretty sure all Kimber 1911's were made in Yonkers, New York. The early guns were stamped Clackamas, Oregon, as that was where Kimber's headquarters were located, but they were all manufactured...