American Revenue Association
ARA is a non-profit corporation serving the needs and interests of ALL collectors of revenues, tax stamps, stamped paper, telegraph and railroad stamps, and general non-postal Back-of-the-Book material.
Society of Paper Money Collectors
Membership is open to anyone interested in paper money or related areas such as checks, stocks, engravings, and other fiscal ephemera.
American Association of Philatelic Exhibitors
Lists exhibit judging criteria. Shows examples of exhibit pages.
American Philatelic Society
Lists stamp show and exhibition calendars, Lists stamp show judges.
Revenue Stamped Paper Resources
United States Revenue Stamped Paper - The Two Cent Civil War Designs
Background, examples and descriptions of the imprint types of 2-cent Civil War designs.
Richard Friedberg Stamps
Specialist in US Revenues - Sells checks/drafts on revenue stamped paper.
U.S. Revenue Stamps - Sells checks/drafts on revenue stamped paper and with affixed revenue stamps.