Navy Hydrographic Office organization
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Map and Photograph Branch did_business_with
Navy Hydrographic Office documented
document
“Materials were also drawn from the Aeronautical Chart Service Navy Hydrographic Office Coast and Geodetic Survey U.S Geological Survey Office of Strategic Services and several commercial firms including the National Geographic Society.…”
source: government document — Church Committee Final Report, Book VI: Supplementary Reports on Intelligence Activities · p.213