"In the months of August and September of the year 1899 occurred, about three days from Luebo, one of the most shameful affairs that has come within my knowledge. By way of explanation it is necessary to say that at the State post of Luluaburg, which is about five days march from Luebo, is located a large village of people called Zappo-Zapps. They are cannibals, and were brought from far to the east, and settled there by a State officer named Paul Le Marinel about the year 1890. Ever since their coming to Luluaburg they have been a terror to the whole surrounding district. In fact, having guns and being known to be cannibals and very brave warriors, they have all these years been the great slave-dealers and slave-raiders of the district."
January 1, 1970
https://en.wikiquote.org/wiki/William_Morrison