lifescape, here's an article that will put some history behind your medallion. Very intresting reading. http://blog.numismaticnews.net/flipside/CommentView,guid,a0465311-b180-47b1-88d8-734c64808148.aspx Lou
As far as a classification, Alpert & Elman, in their Tokens and Medals, a Guide to the Identification and Values of United States Exonumia, 1st edition, 1992, it would be classified in Group 24 (Expositions and Fairs), Sub-group W (recent fairs), sub-division 2 (Other medals). The value in this old reference was listed at $1-$3.
