Anon (1899) The Cocoa-Nut (Species Account & Illustration). Birds and All Nature Vol. V, No.2, February, 1899. A.W. Mumford, Publisher

Anon (1899) Map of the island of Ceylon, showing railways built and projected, and coconut and tea plantations. 24 miles to 1 inch. Author, Publisher, &c: Official, Colombo CO 700/CEYLON23a UK Public Record Office

Baumann, O. (1899) Sansibar - Archipel, 3. Heft: die Insel Pemba und ihre kleineren Nachbarinseln, Denker und Humbold, Leipzig 1899.