Harry Aleson's outboard "Up Lake" at left bank below the mouth the side canyon at Separation Rapid. A glass will show the Separation Plaque at the 1939 location

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  The meeting of the Aleson and Nevills parties, Separation Canyon. Charles Larabee at left, then Harry Aleson, Lewis West, and Del Reed

  Manuscripts

  mssMarston papers V097/0148

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  The second Separation Plaque on the beach below its first location after it had been removed by Aleson for the purpose of locating it at a higher elevation above top levels of Lake Mead. Christmas week, 1943

  Manuscripts

  mssMarston papers V097/0162

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  Side canyons on left in Separation Canyon

  Manuscripts

  mssMarston papers V097/0066

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  Harry Aleson, Hugh Brown, George Black - To ½ Mile Below Separation Canyon

  Manuscripts

  Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.

  mssMarston papers

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  Plaque at Separation Canyon prepared by Julius F. Stone and placed by him and a boat party which cruised Lake Mead 1939, Aug. It was moved higher in 1943, Dec. by Harry Aleson and party

  Manuscripts

  mssMarston papers V097/0140

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  Harry Aleson - Walk Out Separation Canyon

  Manuscripts

  Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.

  mssMarston papers