During the retreat of the ill fated Imperial Japanese campaign along the Kokoda Track during the Second World War, Japanese Major General Tomitaro Horii drowned while attempting to cross the Kumusi River at Wairopi, after the battle of Oivi-Gorari.
- Brune, Peter (2004). "A Bastard of a Place". Allen & Unwin. ISBN 1-74114-403-5.
- Lindsay, Patrick (2002). "The Spirit of Kokoda: Then and Now". Hardie Grant Books. ISBN 1-74066-075-7.
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