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- Alberta. Environment Conservation Authority 28
- Parks Canada 19
- Geological Survey of Canada 17
- Canada. Department of the Interior 15
- Alberta. Laws, statutes, etc 13
- Ford, Theresa M., ed 11
- Canada. National and Historic Parks Branch 10
- Canadian Pacific Railway 10
- Canada. Laws, statutes, etc 9
- Gordon, Charles William 9
- Parks Canada. Western Region 9
- Russell, Andy 9