Vol. 2 has imprint 1930.

"Published by the Hydrographic Office under the authority of the Secretary of the Navy."

v.1. (East coast) from the Orinoco River to and including the Plata River.

v.2. Southern part, from the Plata River on the east coast to Corcovado Gulf on the west coast, and including the Falkland Islands, the islands to the Southeast, and the adjacent Antarctic region.

v.3. (West Coast) Corcovado Gulf to the Gulf of Panama, including off-lying islands.