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- Alberta. Environment Conservation Authority 28
- Alberta. Laws, statutes, etc 19
- Parks Canada 19
- Canadian Pacific Railway 14
- Smythe, Francis Sydney 12
- Ford, Theresa M., ed 11
- Metropolitan Museum of Art (New York) 11
- Canada. National and Historic Parks Branch 10
- Birney, Earle 9
- Canadian National Railways 9
- Gordon, Charles William 9
- Parks Canada. Western Region 9