This archived Web page remains online for reference, research or recordkeeping purposes. This page will not be altered or updated. Web pages that are archived on the Internet are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats of this page on the Contact Us page.
| Author | Title | Year | |
|---|---|---|---|
| 1. | The imperfs of 1928 to 1942 - How did over 110,000 stamps from Post Office vaults get into public hands? | 1971 | |
| 2. | Arfken, George B. | Perforations | 1992 |
| 3. | Avery, Derrick | Shades of Chambon | 1990 |
| 4. | Beaudet, Leopold | Several variations of Canadian Bank Note H-comb | 1990 |
| 5. | Beaudet, Leopold | Perforation changes abound of contemporary issues | 1990 |
| 6. | Beaudet, Leopold | Canada Post news issues publication misses mark [Modern perforation error] | 1990 |
| 7. | Beaudet, Leopold | Collectors across country report new perforations [1989-1990] | 1991 |
| 8. | Beaudet, Leopold | Perf variations inevitable with issue of new definitives | 1991 |
| 9. | Beaudet, Leopold | Large number of perf varieties of 39-cent flag [Scott 1189] | 1991 |
| 10. | Bentham, Lorne Wm. | Canada's imperforates stamps | 1965 |