Usually the countries that hold the Olympics issue more than one set of stamps on the subject.
Between 1973 and 1976 Canada released 12 sets of stamps. I only have some of them, and not all complete.
1. Set I: complete
2. Set III: 2 out of 3
3. Set 5: 2 out of 3:
4. set VII- complete:
5. set VIII- complete
6. set IX- one stamp out of 3:
7. set X- complete
8. set XII- complete:
2 sets II and IV on FDCs(thx Bibi for help)