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- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- [Reprint with slight changes] 1921
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- 1921
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- [1921.]
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- [1921.]
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- [1921.]
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- Dec. 6, 1920
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- Feb. 2, 1920
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- Jan. 14, 1920
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- Jan. 14, 1920
- Corporate/Agency Authors:
- National Park Service and Interior Department
- Publisher:
- National Park Service
- Date:
- [Reprint] 1920