US CURRENCY
PMG references many US note types by Friedberg number, based on the system described in Paper Money of the United States by Arthur and Ira Friedberg. In cases where this reference is used, "referenced to Friedberg" appears in the below list:
- US Large Size Type — referenced to Friedberg
- US Small Size Type — referenced to Friedberg and Standard Guide to Small Size US Paper Money by John Schwartz and Scott Lindquist
- US Colonials — referenced to Friedberg and The Early Paper Money Of America by Eric Newman and Stuart Levine
- US Fractional — referenced to The Encyclopedia of United States Fractional & Postal Currency by Milton Friedberg and A Collector's Guide To Postage & Fractional Currency by Robert Kravitz
- US Military Payment Certificates (MPC) — referenced to Military Payment Certificates by Fred Schwan
- Confederate — referenced to Friedberg, Confederate and Southern States Currency by Grover Criswell, Collecting Confederate Paper Money by Pierre Fricke, Southern States Currency by Hugh Shull and A Guide Book of Counterfeit Confederate Currency by George Tremmel
- US Obsolete Currency — referenced to Standard Catalog of United States Obsolete Bank Notes 1782-1866 by James Haxby, as well as individual state books by various authors
- US Large Size Nationals — referenced to National Bank Notes by Don Kelly
- US Small Size Nationals — referenced to National Bank Notes by Don Kelly
- US Paper Money Errors — referenced to United States Paper Money Errors by Frederick J. Bart
- US denominated scrip, including merchant, transportation and good for. Checks, satire scrip and advertisement are not eligible for certification.
WORLD BANKNOTES
PMG references many World note types by Pick number, based on the system developed by Albert Pick and described in Standard Catalog of World Paper Money edited by George Cuhaj. In cases where this reference is used, "referenced to Pick" appears in the below list:
- Australian Banknotes — referenced to Pick and Renniks Australian Coin and Banknote Values by Eddie Cummings
- Canadian Banknotes "Bank Of Canada" and "Dominion of Canada" referenced to Charlton Standard Catalogue of Canadian Government Paper Money edited by R. J. Graham
- Canadian Charter Banknotes — referenced to Charlton Standard Catalogue of Canadian Bank Notes edited by R. J. Graham
- Chinese Banknotes — referenced to Pick and Chinese Banknotes by Ward Smith and Brian Matravers
- Korean Banknotes — referenced to Pick, D&K and K&C
- South Korean Banknotes — referenced to Pick, D&K and K&C
- Polish Banknotes — referenced to Pick and Catalogue of Polish Banknotes by Czeslaw Mitczak
- All other World Banknotes — referenced to Pick and Standard Catalog of World Paper Money edited by George Cuhaj
