Sketch K of the preliminary survey of the "Mouth of the Columbia River, Oregon
Territory" by William P. McArthur. Although not shown, Washington Bartlett did
a significant part of this work. A. M. Harrison did the topography in the inset
for Cape Hancock. This illustration appeared in the 1850 Annual Report and was
the first work done in Oregon Territory. See cgs05081 for finished chart.
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