| 2023 | Chip Gliedman | Mail Routes of Rupert's Land, British North America Chip at the frame |
| 2022 | Jan Hofmeyr | The Process That Led to the "Grill" Stamps of the United States, From First Experiments to the Earliest Z-Grills |
| 2020 | Mark Schwartz | Boston's Use of the 1847 Issue |
| 2019 | Doug Weisz | New Orleans in the Confederate Mail System |
| 2018 | Cheryl R. Ganz | Zeppelin LZ-129 Hindenburg Onboard Postmarks |
| 2017 | Michael T. Mahler | Big Rug, Small Rug, Baby Rug: U.S. Civil War Era $200 and $500 Revenues, Their Purpose Illustrated |
| 2016 | Ron R. Brigham | Canada: The Twelve Pence of 1851: From Production to Forgery |
| 2015 | Larry Lyons | America's First Stamp Design, The United States City Despatch Post |
| 2014 | Mark S. Schwartz | U.S. Retaliatory Rate of June - December 1848 |
| 2013 | Mark S. Schwartz | Ship Letters sent Along the Trade Routes of Salem, Mass. 1787-1837 |
| 2012 | Henry Marquez | The First Coil of the World |
| 2011 | Van Koppersmith | Mobile, Alabama CSA Provisional Issue |
| 2010 | Van Koppersmith | Royal Mail Steam Packets through Mobile, Alabama |
| 2009 | Stephen Tedesco | The U.S. 15 cent Webster of 1870: From Model to Finished Plate |
| 2008 | Harvey Mirsky | America's First Issue: Philadelphia Usages & Markings |
| 2007 | Reuben A. Ramkissoon | The Trinidad World War I Red Cross Label that Became a Postage Stamp |
| 2006 | Fred Fawn | Canada: The 15¢ Large Queen - 1868 |
| 2005 | Paul A. Fletcher | Trinidad: The 1885 Postage Due Issue |
| 2004 | Wolf Spille | Argentina: The World's First Columbians |
| 2003 | Edward J.J. Grabowski | Reunion: The Use of Due Stamps for Regular Postage: December 31, 1900-January 20, 1901 |
| 2002 | Harlan F. Stone | Switzerland's Golden Franc |
| 2001 | Jerome V.V. Kasper | New Zealand Prisoner of War Aerogrammes |
| 2000 | Martin J. Miller | Samoa's 1-Shilling Bisect |
