Market Analyst Thomas Michael has served as director of world coin values for all of Krause Publications' world coin catalogs for the past 30 years. Equipped with a Bachelor of Arts degree in history and Master of Arts degree in economics, Michael, who has a lifelong passion for numismatics, has played a critical role in the creation of more than 100 industry-leading references. Tracy Schmidt worked for several years in the numismatics auction business before joining the Numismatics team at Krause Publications. She has an extensive editorial background in the field and serves as the lead editor for all paper money catalogs.