Natal. Commission appointed to inquire into and report upon matters relating to coffee cultivation in the colony. Report. Maritzburg, 1881. 6 pp.
Stainbank, H.E. Coffee in Natal; its culture and preparation. London, 1874. 78 pp.
NICARAGUA
Shedd, W.J. The story of Matagalpa coffee. Tea and Coffee Trade Journal, 1918, XXXIV: 118–122.
PARAGUAY
Coffee growing in Paraguay. Scientific American Supplement, 1914, LXXVIII: 340.
PORTO RICO
Linck, J.H. Arbor caffé Lipsiae florens. Extrait factice des Ephem. Acad. naturae curiosorum. 1725. 7 pp.
McClelland, Thomas B. Suggestions on coffee planting for Porto Rico. Porto Rico Agricultural Experiment Station. Circular, no. 15. Also in Spanish.
McClelland, T.B. Restoring Porto Rico coffee. The Tea and Coffee Trade Journal, 1918, XXXV: 420–421.