United States Hydrographic Office
Government agency
The United States Hydrographic Office prepared and published maps, charts, and nautical books required in navigation.
The office was established by an act of 21 June 1866 as part of the Bureau of Navigation, Department of the Navy.
It was... Wikipedia
Parent organization: Bureau of Navigation
Jurisdiction: United States and United States Department of the Navy
Founded: June 21, 1866