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Subject
- Travel[remove]7
- Discovery and exploration3
- Frobisher, Martin, Sir, approximately 1535-15943
- History3
- Astronauts2
- Discovery (Spacecraft)2
- Exploration2
- Gold mines and mining2
- Space flights2
- Thomas, Don, 1955-2
- Aerial exploration1
- Aeronautics1
- Anderson, Robert Mads1
- Biplanes1
- Eielson, Carl Benjamin1
- Exploration, Aerial1
- Flights1
- Geological surveys1
- King, Clarence, 1842-19011
- Landscape photography1