1935 Tokyo Wan Japan Hydrographic Survey Map.

This piece is in great shape and measures 42 in by 30 in. It was published by the United States Navy Hydrographic Office under the authority of the Secretary of Navy. It includes surveys between 1923 and 1927 with additions to 1959. It was revised in October 1966. There are 2 tiny  black marks on it by Yoyohama. (see photos)