At the present time I am working on a Air Tower book where I will identify over 450 air meters used since 1897. I self-published a book on air meters back in 1996 where I identified only 170 and it was in black and white. This new book will be in color, just like the Gas Pump Identification book I wrote three years ago.
I have a picture of almost every Tireflator made by ECO (missing their #1 & #2) and I also own many giveaway items and testing equipment they provided. ECO probably manufactured more air meters than any other company, but meters made by American were in my opinion much more ornate.
You might want to take a look at my website, it contains a number of pictures of ECO meters.
www.crspub.com I would suggest you contact me by email with your needs.
Jack Sim
Author, Gas Pump Identification book