Worth it for the link to the 224 page
History of the Topographic Branch (Division) https://pubs.usgs.gov/circ/1341/pdf/circ_1341.pdf
with all manner of trivia including: U.S. patents issued to U.S. Geological Survey photogrammetrists etc.
History of the Topographic Branch (Division) https://pubs.usgs.gov/circ/1341/pdf/circ_1341.pdf
with all manner of trivia including: U.S. patents issued to U.S. Geological Survey photogrammetrists etc.