Here I found three scribbled information that I found in the Oreo tin box in the My Collection of Drawer #3 that I wrote this in the 1980's.  I check all three notes and, indeed there is such exist on the web sites I found:

The first one: Indiana, Nostalgic Neon: Steve Renner, [Street address and phone number listed here (Private)], (Renner has large collection of neon clocks and is beginning a collectior's assoc.)

The second one: Miller, Samuel Neon Techniques and Handling of Neon Sign and Cold Cathode Lighting., Third Ed., Cincinnati Signs of the Time Publishing, 1977.  Here I found this at Neon Techniques and Handling: Handbook of Neon Sign and Cold Cathode Lighting [Paperback] in the Amazon web site.

The third one: Illinois Lightwriters Neon: Jacob Fishman, [Address and phone number listed here [Private]), (Intro & Personal Instruction in Design & Fabrication.  Fee for 30-Hr Intro Course: (US)$ 360)  Here I found this at Lightwriters Glass Studio and the author of this site; Jacob Fishman, Artist, Engineer, Educator.