Thanks a lot everyone. While searching I did notice the existence of a professional racer named Tim Johnson. I'm not sure if there is any connection there or not. I think the Cinelli BB serial number could be a key in identification. Does anyone know of any databases?
The frame has somewhat unusual geometry. The TT is 53 C-C. The ST is 52 C-C. The very short wheelbase (97cm) makes me think it was designed as a crit racer.