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- Alberta. Environment Conservation Authority 28
- Smythe, Francis Sydney 22
- Parks Canada 19
- Alberta. Laws, statutes, etc 13
- Canadian National Railways 11
- Canadian Pacific Railway 11
- Ford, Theresa M., ed 11
- Birney, Earle 10
- Canada. National and Historic Parks Branch 10
- Thorington, James Monroe 10
- Palmer, Howard 9
- Parks Canada. Western Region 9