During the preparations of the JLL- projects in 2002 I was asked by my colleague Jan van Bremen^† to help him to save the audio-visual materials of Cornelius Ouwehand.

In 1964 Kees(Cornelius) Ouwehand and his wife Shizuko Kusunoki travelled to the coral island Hateruma, the southernmost island of the Ryukyuan archipelago, to do documentation and research on the socio-religious aspects of the island with formal permission from the island's deities. This lead to many lectures on Hateruma inside as well as outside of Japan and eventually to the publication in 1985 of Hateruma - Socio-Religous Aspects of a South-Ryukyuan Island Culture by Brill in Leiden, The Netherlands.

During their nine-months stay Kees and Shizuko concentrated on the agricultural rituals of the island which they were allowed to document by way of exception. Piles of slides and several miles of sound tapes were left deterio-rating for years because of Kees' premature death, until Jan van Breemen and Shizuko knocked on the JLL door to have all materials digitized and make it available to research and education.

Since 2002 thousands of photos, slides and sound tapes have been digitised by me. Keiko van Bremen^† , Ronald van Oeveren and Frank Blanken. With these materials Shizuko and I produced several presentations in Apple's Keynote and one lecture on DVD which is still available for online viewing.

Information on the Hateruma project is still available at the JLL-site.