Here are links to online resources pertaining to stamps and postal history of the Admiral era. Some resources are on the BNAPS website, some on external websites.

The Admiral Study Group BNAPEX and virtual meeting presentations have been moved to a separate page. To access the page, click the "Presentations" button above.

Online resources

Guide to the Admiral Stamps of Canada (html) - Randall W. Van Someren
Discusses die changes, printing, paper, straight edges, coils, fakes, forgeries, terminology used by Marler, varieties, cancellations, and rates. Provides a comprehensive bibliography.

King George V Admiral Issue of Canada (html & PDF) - Tom Meyerhof
Good introduction to collecting the Admiral Issue. On the website of the Ottawa Philatelic Society.

The Admirals after Marler (12.2 MB pdf) - Leopold Beaudet
Describes discoveries made after Marler's 1982 book, The Admiral Issue of Canada, was published. Topics covered include plates, lathework, pyramid lines, booklets, re-entries and retouches, design types, plate flaws, and fluorescent ink.

Admiral Plate Census (html) - Glen Lundeen
Compilation of plate imprint items from eleven collections and five major auctions.

Finding Images for Marler ... and Beyond (html) - William G. Burden
Provides detailed images (over 5,000 of them as of August 2026) of re-entries, retouches, and other plate flaws on Admiral stamps. Accompanying each image is a description (taken from Marler for re-entries and retouches described by Marler) and, where known, the plate position and Marler design type. All the text fields are searchable. If you have discovered a constant plate variety on an Admiral stamp and are curious about whether it has been reported previously or you want to plate it, here is a great resource.

Admiral Re-entries (html) - Ralph E. Trimble
This website provides detailed illustrations with short descriptions of a large number of re-entries on Admiral stamps. The website covers re-entries found on all stamps of Canada and the provinces. It also features re-entries from other countries.

Diode Laser Analysis of 2¢ Carmine Ink (PDF - 2.5 MB) - Richard Judge
Describes how a diode laser can identify shades of the 2¢ Carmine. This presentation was given at the Admiral Study Group meeting at BNAPEX 2019 Ottawa.

The Chemistry of the War Time Admiral (html) - Richard Judge
This one-frame exhibit studies the ink used for the 1911 Admiral 2¢ carmine stamp using reflectance, X-ray fluorescence, and Fourier Transform infrared spectroscopy. The 2¢ carmine stamp is well known for its aniline ink and shade varieties. The exhibit uses spectroscopy to analyze these varieties.

► NEW 2025-04-19◄
The Postal Rates of the Admiral Era (1912-1928) (html) - John F. Graham
This ten-frame exhibit illustrates the postal rates and rate changes during the era of the Admiral Issue, from its inception in 1912 to its replacement by the Scroll Issue in 1928. The exhibit is in the Online Resources & Exhibits (ORE) area of the BNAPS website. To view it, go to "Canada ● Postal History" in the ORE Exhibits section.

Squared Circle Postmarks in the Admiral Period 1912-1927 (1.3 MB PDF) - Gary Arnold
Discusses the squared circle postmarks found on Admiral stamps between 1912 and 1927. Lists all the post offices that used a squared circle canceller during this period, the hammer's period of use, and the rarity factor for each post office. Gives details about, and illustrates, postmarks from the scarcest towns.

This presentation is an update of a seminar given to the Admiral Study Group during BNAPS 2025 Virtual on 1 March. A video of the seminar is available on the Study Group's Videos web page.

► NEW 2026-07-10◄
The Philatelic Scene during the Admiral Era (html) - Leopold Beaudet
This four-frame exhibit is all about the Admiral issue even through it does not feature re-entries, retouches, lathework, pyramid lines, rates, or foreign destinations. It explores the philatelic activities during the Admiral era by profiling significant collectors, dealers, societies, publications, and events of that era. The exhibit is in the Online Resources & Exhibits (ORE) area of the BNAPS website. To view it, go to "Philately ● Canada" in the ORE Exhibits section.

The 1917 3¢ Confederation Commemorative (PDF - 1.8 MB) - Leopold Beaudet
Provides an overview of the 1917 3¢ Confederation stamp based on a study by Richard M. Morris. Discusses the printing, plates, design types, and plate varieties. This is a presentation made at the Admiral Study Group meeting at BNAPEX 2008 Halifax, NS.