No. Title Date
1 Suggestions for a grammar of "Bangala" (the lingua franca of the Upper Congo), with 2000 words and many useful phrases
2 Suggestions for a grammar of "Bangala", the "lingua franca" of the Upper Congo, with dictionary
3 Vocabulary of the Bangala language as spoken in the Lado district, Mongalla province
4 Vocabulary of the Bangala language as spoken in the Lado District, Mongalla Province : (interleaved version)