If you had attended the "It's a Gas" show this past weekend in Columbia, Missouri you could have added about 30+ items to your Nourse collection. They are a little pricy, but still affordable. There are a few Nourse collectors in the KC area.

Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available