Manuscripts
Rapid No. 23 at Mile 202.20/Rapid #24 in The Big Drop in Cataract Canyon. Mile 202+
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Head of Rapid 23 at Mile 202.20. Rapid 23 heads at Mile 202.20 and drops 8 ft. in .15 miles
Manuscripts
mssMarston papers V012/0215

One of the Brown-Stanton boats at the head of Rapid No. 23 in Cataract Canyon, Mile 202.20
Manuscripts
mssMarston papers V012/0186
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The Big Drop; Mile 202.20, Satan's Gut - Mile 202-203
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

Mytton at foot of Rapid #23 in Cataract Canyon. The rapid ks known as part of The Big Drop
Manuscripts
mssMarston papers V012/0239

Dave lashing boats together at lower rapid of the "Big Drop", Mile 202, Cataract Canyon
Manuscripts
mssMarston papers V013/0010
