[1] Article 3 of the decree of 16 April 1887 provided for the Congo Free State to be divided into administrative districts headed by district commissioners, assisted by one or more deputies.

[2] A map of the Congo Free State drawn in 1897 shows Lualaba Kassai District extending eastward from Stanley Pool District along the Kasai River, then broadening out and stretching down to the southern boundary of the Congo Free State.

In this map, Stanley Falls District is shown as also extending to the southern boundary.

[6] An arrêté royal of 28 March 1912 divided the Congo into 22 districts.

[8] It contained the districts of Bas-Congo, Léopoldville, Kwango, Kasai and Sankuru.

[6] With the 1933 reorganization Bas-Congo, Léopoldville, Kwango and Lac Léopold II were included in the Léopoldville Province while Kasai and Sankuru formed the new Lusambo Province.