Yes! It is a fairly recent (2003) gem of a reference: Merchant and Privately Countermarked Coins, Advertising on the World's Smallest Billboards by Gregory G. Brunk, published by World Exonumia Press in Rockford, IL www.exonumia.com . It is not cheap, but it is an excellent read and a must-have reference. John in Idaho
that last one was a good refrence there is also the hard times tokens book , tokens by RAULA and if it foreighn many are listed in the respestive countries sctions as well as well as american being counter satmped for use as the national currency for another