dook,
I like your perseverance! Yes Lunken "Sunken Lunken" Field in Cincinnati, Ohio. Really only a hop and a skip from Wright Field in Dayton, Ohio where both the Me-109 and the Spitfire were undergoing evaluation.
Here ia a views of the airport. The ridgeline faintly visable in the background is above the straight line edge of the fields in the background..
Back to you, my friend...
C2j