Filters: Tags: Topography (X) > Date Range: {"choice":"year"} (X) > Categories: Image (X)

Filters Date Types (for Date Range) Types Map Service (3) OGC WFS Layer (3) OGC WMS Layer (3) OGC WMS Service (3) Contacts U.S. Geological Survey Walker, W.C. Tag Types collection (4) label (4) Place (3) category (3) View Results as: JSON ATOM CSV

Long bar with multiplex projectors. Denver, Colorado. 1955. Album caption: Long bar with multiplex projectors. Photogrammetry, Topographic Division, U.S. Geological Survey. Denver, Colorado. 1955. No index card. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Jefferson County, Colorado, Photographers, Topography, Walker, W.C. Collection, photo print Twinplex stereoscopic plotter, Denver, Colorado. 1955. Album caption and index card: Twinplex stereoscopic plotter for transverse and convergent photography. Photogrammetry, Topographic Division, U.S. Geological Survey. Denver, Colorado. December 1955. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Jefferson County, Colorado, Photographers, Topography, Walker, W.C. Collection, photo print Russell K. Bean and twinplex. Date and location unknown. Album caption: Twinplex and Russell K. Bean, room 106. Portrait. No index card. Categories: Image; Tags: Topography, photo print Single pair of multiplex projectors. Denver, Colorado. 1955. Album caption: Single pair of multiplex projectors for stereoscopic plotting. Photogrammetry, Topographic Division, U.S. Geological Survey. Denver, Colorado. December 1955. No index card. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Jefferson County, Colorado, Photographers, Topography, Walker, W.C. Collection, photo print