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The 1937 Carnegie-Caltech Colorado River Expedition By Erik Berg 2009 Grand Canyon River Guides GTS The 1937 Carnegie-Caltech Colorado River expedition is one of the most overlooked of the early Grand Canyon river trips
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Document Date: 2012-01-14 05:24:45
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The 1937 Carnegie-Caltech Colorado River Expedition By Erik Berg 2009 Grand Canyon River Guides GTS The 1937 Carnegie-Caltech Colorado River expedition is one of the most overlooked of the early Grand Canyon river trips