2019 Scott Standard Postage Stamp Catalogue - Volume 4Donna Houseman, Charles Snee, James E. Kloetzel, Martin J. Frankevicz, Steven R. Myers · First published 2018Open the Tome
Scott 2008 standard postage stamp catalogueJames E. Kloetzel, William A. Jones, Martin J. Frankevicz · First published 2007Open the Tome
