Links to Articles, Organizations & Blogs:
Articles--
State Revenue Stamps of the USA by Scott Troutman
Published in the September 2012 issue of The Revenue Journal.
Organizations--
American Philatelic Society
The APS is the largest, nonprofit society in the world for stamp collectors.
American Philatelic Research Library (APRL)
The American Philatelic Research Library is the largest public philatelic library in the United States. Its holdings include many of philately's classic periodicals, and it receives more than 400 current periodicals from around the world.
American Revenue Association
The ARA is the largest, oldest and fastest-growing national or international society devoted to revenues, tax stamps, stamped paper, telegraph and railroad stamps, and general non-postal Back-of-the-Book material.
Meter Stamp Society
The Meter Stamp Society is dedicated to the collection of postage meter stamps, topical slogans on postage meter stamps, computer postage (CVP), framas, photostamps and similar items.
Postal History Foundation
The mission of the Postal History Foundation is to promote an appreciation of stamp collecting and postal history through the preservation of philatelic and postal history collections, literature and documents, and the enhancement of youth education using stamps as teaching tools.
Revenue Society
The Revenue Society is an international society for collectors of Worldwide Revenue Stamps and Documents that promotes the research and display of revenue stamps and their associated documents, and publishes a quarterly journal [The Revenue Journal]. The Society also encourages members to exhibit their collections at regular meetings in England as well as at National and International Philatelic Exhibitions.
Stamp-oriented Sites--
State of New York Stock Transfer Stamps
High resolution color images of 286 varieties of these stamps. Content is nicely indexed, with examples of key identification features, and usage examples.
Eric Jackson
World's leading philatelic firm dealing in United States and Canada revenue stamps and related literature.
DK Enterprises
Large selection of Revenues, Postal History,Military/P.O.W./Censored, and US & WW Stamps. ALWAYS Buying!!
Stamp Collecting for Kids and Adults
Some interesting links about a variety of philatelic subjects
Blogs--
Revenue Stamps
This group is devoted to exchanging information on the collecting of U. S. federal and state revenues. The blog is moderated by Ronald Lesher.