Manuscripts
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

Ed Hudson, Harry Aleson, Hugh Brown, Fred Swenson. Separation Plaque. After failure of upriver attempt in 1944, Feb
Manuscripts
mssMarston papers V097/0166
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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


