2020 Standard Catalog of World Coins 1901-2000Thomas Michael, Tracy L Schmidt · First published 2019Open the Tome
Standard Catalog of World Paper Money, General Issues, 1368-1960Tracy L Schmidt · First published 2016Open the Tome
Warman's antiques and collectibles price guideSchroy, Ellen T./ Schmidt, Tracy L. (EDT) · First published 1994Open the Tome
