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- Alberta. Environment Conservation Authority 26
- Alberta. Laws, statutes, etc 24
- Parks Canada 20
- Gibbons, Wm. JL (Bill Gibbons) 17
- Canada. National and Historic Parks Branch 15
- Birney, Earle 13
- Canada. Department of Indian Affairs and Northern Development 11
- Metropolitan Museum of Art (New York) 11
- Water Survey of Canada 11
- Baird, David M 10
- Ford, Theresa M., ed 10
- MacGregor, James G