Single pair of multiplex projectors. Denver, Colorado. 1955.
Dates
Date Taken
1955-12
Summary
Album caption: Single pair of multiplex projectors for stereoscopic plotting. Photogrammetry, Topographic Division, U.S. Geological Survey. Denver, Colorado. December 1955. No index card.
Summary
Album caption: Single pair of multiplex projectors for stereoscopic plotting. Photogrammetry, Topographic Division, U.S. Geological Survey. Denver, Colorado. December 1955.
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Material Request Instructions
Available in the U.S. Geological Survey, Denver Library Photographic Collection, Walker, W.C. Collection.
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