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- Cachets (Philately)2
- Canada2
- Commemorative postage stamps2
- First day covers (Philately)[remove]2
- Nobel Prize winners[remove]2
- Postage stamps2
- Science on postage stamps[remove]2
- Banting, Frederick Grant, Sir, 1891-19411
- Best, Charles Herbert, 1899-19781
- Medical scientists1
- Nuclear physics1
- Physicians1
- Physicists1
- Postmarks1
- Rutherford, Ernest, 1871-19371
- University of Toronto1