Found this book on Lulu.com:
A humorous collection of columns through the years by Chuck Koehler.
Chuck writes from a unique perspective about dealing with the
public.........the retailers' perspective. He has a no holds barred
style that tells it like it is. Though the columns are geared
towards the jewelry industry, if you've ever worked in retail or
worked with the public, you'll enjoy this collection. This newly
revised edition includes all columns through 2006.
Hard to Find Tools for Metal Clay