David,
I’ve asked it, he bought them in Sweden about ten years ago.
The only Oaklawn and Chanute sets that I know of are recently imported.
I’m not saying that it never happened but there is no evidence to believe that they ever were.
In the past 2 years I’ve done quite some research and came across 9 or 10 Camco sets over here, all LA badged. As far as I could track down their history, someway or another they must have passed the European importer located in Belgium (Sint Niklaas). (Rudy’s Music Shop)
There seem to be only 2 areas in Europe where LA Camcos pop up from time to time,... Belgium and Sweden.