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| Author | Title | Year | |
|---|---|---|---|
| 1. | Asquith, Luke | Barrel cancellations | 1980 |
| 2. | Barlow, K. | Canada postmarks - barrel type cancellations | 1976 |
| 3. | Campbell, J. Colin | Roll out the barrels | 1992 |
| 4. | Street, Mike | Barrel cancels - the squared circles of the twentieth century | 1986 |
| 5. | Plain, Brian | Barrel cancels | 1979 |
| 6. | Shaman, Tony | Barrel cancels possess attractive attributes to philatelists | 1991 |
| 7. | Small, Lester E. | The Victoria B.C. barrel cancel | 1980 |
| 8. | Smith, Robert C. | Canada's barrel cancels | 1980 |
| 9. | Smith, R. C. | Canadian barrel cancels [Master list - early & late dates] | 1981 |
| 10. | Steinhart, Allan L. | Barrel cancels provide focus for interesting study | 1976 |