When So-Called Dollars was published in 1963 it was the first, and more than 40 years later it remains the only book on this specialized series of exposition, commemorative and monetary medals approximating dollar size. Beginning with the legendary Erie Canal Completion issues of 1826, 135 years of American history is reflected in the array of issues cataloged here. This edition features more illustrations; more historical information; more listings including previously unknown metal varieties and totally new items; sizes listed in millimeters rather than 16ths of an inch.