1. A map of the upper Zambezi basin showing the distribution of tribes under the rule of the paramount chief of the Marotse / [cartographic material] Yale Public content 1900. 2008-07-31T16:06:28Z. 2018-09-05T19:58:06Z. Gibbons, A. St. H. (Alfred St. Hill), 1858-1916, cartographer. John Lane. English. cartographic image. Public. Zambia, Zambezi River Valley, Zambezi River Valley., and Zambia.