Topographic map of portion of Maniema-Kivu district, Belgian Congo, Africa / topography by R.B. Oliver ; assisted by traverses and sketches by S.H. Ball, M.K. Shaler, A.F. Smith, A.E.H. Reid, and C.A. Reid.1909]At head of title: "Forminiere Expedition 1907-1909, S.H. Ball, chief of party."Imperfect: two sheets formed by center fold tear.cartographic