The Collector's Handbook 2016 10th EditionJames L. Halperin Gregory J Rohan Mark J. Prendergast · First published 2016Open the Tome
The Collector's Handbook, 9th EditionJames L Halperin, Gregory J Rohan, with Mark Prendergrast · First published 2015Open the Tome
The Coinage of Augustus Saint-GaudenBy James L. Halperin; Mark Van Winkle; Jon Amato and Gregory J. Rohan · First published 2006Open the Tome
