Compiled from German Government charts and other authorities to 1933. Reproduced by Hydrographic Branch, Sydney by permission of the hydrographer. Engraved 1934
7th October 1943. Compiled from German Government charts and other authorities to 1933. Reproduced by Hydrographic Branch, Sydney by permission of the hydrographer. Engraved 1934
1st September 1943. Based on maps "Der Sepik und sein stromgebiet," by Dr. Walter Biehrmann and "Der Sepik" (kaiserin August strom), by Prof. Dr. Leonhard Schultze Jena. Additional information furnished by local informants.…