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Kununurra Historical Society: 1960-11 - Leif Ott Nilsen OIC of C and N in Australia carrying rifle hunting trip near proposed main Ord River sites - KHS-2011-17-a-P2-D
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Kununurra Historical Society: 1960-11 - Erik Seidelin - KH Sorensen firing rifle and Leif Ott Nilsen near Ord Main Dam sites - KHS-2011-17-b-P2-D
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Kununurra Historical Society: 1960-11 - L-R Leif Ott Nilsen - KH Sorensen and Erik Seidelin near proposed Ord Main Dam sites - KHS-2011-17-c-P2-D
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Kununurra Historical Society: 1960-11-01-ca - Ivanhoe Airstrip taken about 1 November 1960 - KHS-2011-17-d-P2-D