Geological Survey, Dept. Interior. Washington, D.C., Mar. 13. E.A. Shuster working with the erocartograph constructing topographies from airplane pictures

Geological Survey. Washington, D.C., March 13. Albert Pike using a stereoscope on a pair of photographs to bring out the relief and locate objects for a map

Geological Survey. Washington, D.C., Mar. 13. The offset camera making and copying maps, charts, and diagrams. This is used to change the size and makes the different plates for the different colors used on the maps

Making prints for $3,000,000 map. Grover M. Plew, AAA laboratory worker, making the finished photographic prints which go into the finished map now being put together by the AAA. Approximately one-third of the entire land surface of the United States is being photographed from the air for the map. 7

Working of $3,000,000 map. (2) C.E. Kowalozyk, AAA worker, using a planimetor, which measures the exact acreage in each section of land surface photographed, 7/28/37

New process expected to revolutionize map making. Washington, D.C., March 21. A new machine just designed and perfected by John Braund, Cartographer for the U.S. Coast and Geodetic Survey, by which relief maps can be made showing all the details of topography in a form true to nature, is expected to

Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and Navy. There are lights in the rear of the columnmeters and exposures are made on the photographic plate in fro

Washington, D.C., Mar. 13. H.C. Yates with the process printing frame printing direct from negative to metal plate. At the geological survey

Geological Survey. Washington, D.C., Mar. 13. Lithographic draftsmen correcting the printing plates at the Dept. of Interior Geological Survey Section