Isn't it odd that nobody truly knows for certain if Kirkwood, Schneider, , etc were actually manufactured here? No old pictures of the factory or workshops showing these guns being built, no articles written back then detailing their manufacture, nothing out there that positively confirms that they actually built guns from the ground up. I'm in the camp of putting a gun together from sourced parts doesn't necessarily make you a gun manufacturer or qualify it as being from the USA.
Yet, today if you drill a single hole in an existing action the Fed.gov considers you a firearms manufacturer.