The Comorian archipelago is located at the northern end of the Mozambique channel in the western Indian Ocean. Of volcanic origin, the archipelago consists of four major islands and several smaller ones which, for many centuries, have been the sites of ports for ships from Asia, Africa, and Europe. They played an especially prominent role in the networks of maritime trade in the Indian Ocean during the fifteenth century and were involved in the maritime trade much earlier. As one would expect of people involved in trade over a long period of time, Comorians have been keepers of records. Thus, the Comoro Islands have become a rich source of both written and oral documents.
Some of the numerous documents that have been discovered on the islands have served as the basis of the published histories of the Comoros. Others have been published themsleves and all have provided valuable information about life in the islands. Many documents, however, still remain unpublished. I have had the opportunity to collect numerous documents over the nearly twenty years that I have been gathering information about the Comoro Islands, and this collection continues to grow today. When I am not in the islands, Comorians send or bring documents to me in Kansas which I copy or record before returning them to their owners. During my trips to the islands I have taped oral information, photographed data of historical significance, hand-copied documents, and have been given or lent rare publications.