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Colonel Claude Hale Birdseye
1878-1941
Explorer-Geographer-Surveyor
Chief topographic engineer of the U.S. Geological Survey 1918-1929
And the first
President of the American Society of Photogrammetry 1934
He headed a Geological Survey expedition through the Grand Canyon in 1923 to
acquire information on the hydrology, topography, and geology of the Colorado River.
This daring exploration yielded scientific data that contributed to prudent use of the
river's waters for the production of energy and the economic development of several
western states.
Presented by the American Society of Photogrammetry
This sign is found along a route which has been photographed for inclusion in
the UntraveledRoad virtual world. To see and follow the route this sign
is on, click on its image.
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