Jean Demmeni, 1896-1897, Bamboo cases with carved decorations by the Mendalam-Kayans on the Upper Kapuas for storing tobacco and small jewelry, [Borneo expedition to Central-Borneo led by Dr. A.W. Nieuwenhuis], Photograph, Leiden University Library, LL/90580

Jean Demmeni, 1896-1897, Hawats (= wooden board to support children) of Kayan headmen on the Mendalam, Upper Kapuas River (Sungai Kapuas), [Borneo expedition to Central-Borneo led by Dr. A.W. Nieuwenhuis], Photograph, Leiden University Library, LL/90581

Jean Demmeni, 1896-1897, Masks of Mendalam Kayans, Upper Kapuas River (Sungai Kapuas), Central Borneo. Left a hoedo adjat; right a hoedo bawoei (wild boar), [Borneo expedition to Central-Borneo led by Dr. A.W. Nieuwenhuis], Photograph, Leiden University Library, LL/90582

Jean Demmeni, 1896-1897, Objects of worship, held by the Kayans on the Upper Mahakam. From left to right Tekok, Usu Bruwa, Bowo Nangan, Telu hina, Tawu Nangan, [Borneo expedition to Central-Borneo led by Dr. A.W. Nieuwenhuis], Photograph, Leiden University Library, LL/90583

Jean Demmeni, 1897, August, Barito Dayak, Central Borneo, [Borneo expedition to Central-Borneo led by Dr. A.W. Nieuwenhuis], Photograph, Leiden University Library, LL/90579