Over the past year I have found three canning factory tokens, two of which have numbers on the back. I believe the numbers indicate the tokens were a form of payment. The tokens are from the Cane Hill Canning Co. in Cane Hill, AR; Cain Canning Co. in Springdale, AR and Chamberlain Canning Co. which was located in Anderson, MO. Are these considered to be Merchant Trade Tokens? If not, what is the correct terminology to identify them? Also, if they are Merchant Trade Tokens, does anyone have a copy of Tom H. Robinson's "AR Merchant Trade Token Book and Rarity Guide" and are they listed in it? I was unable to locate a copy going through the public library system. Any help or advice is appreciated.