You are correct. I believe they are still in the original building in Seattle. I think its been there since the late thirties early forties. The Bardahl name is a very prominent one in Seattle. They were once a very popular brand, and well known from Unlimited Hydroplanes, or as we northwesterners called them "thunder boats". They had a boat for quite some time, The miss Bardahl. My father raced Unlimited Hydros and was rookie of the year in 1968. He actually did a test drive for Bardahl in a car with all of the oil drained. As I recall it was driven quite some distance without issue. This was years ago.