Plants Against Malaria : J R Coll Physicians Edinburgh 2002 pages 189-196. This article sings the praises of the Chinchona
pioneer, Charles Ledger (1818-1905) - another of the forgotten men of the saga - and his faithful accomplice Manuel Incra
Mamani - who died for Chinchona seeds!!!
India Rubber and Gutta Percha : A Compilation of all the available information respecting the trees . A. M. & J Ferguson
of the Ceylon Observer. This contains several of Robert Cross's reports.
The Whole Art of Rubber Growing By W Wicherley London 1911
Contains faithful references to Robert Cross.
Royal Botanic Gardens Peradeniya J C Willis 1901.
Hevea Brasiliensis or Para rubber : Herbert Wright 1905.
Rubber and Rubber Planting By R H Lock 1913 Cambridge University Press. Briefly tells the story of Cross's shipwreck in
The Realm of Rubber By H H Ghosh 1928 Calcutta. Sings the praises of Henry Wickham.
The India Rubber Journal March 20 1926 : The Early History of the Rubber Industry By B D Porritt. The niece of Robert
Cross - Grace McKean Buchanan - who married her cousin James McLelland of Cadder - who arranged Robert's affairs after his
death - contributed to Porritt's research for this article.
Proceedings of the IRI : Evolution of the Rubber Industry pages 116-117.
Rubber in Malaya 1876-1922 Genesis of the Industry By J Drabble 1973. Makes a fair assessment of Robert Cross's efforts.
The Fever Trail: In Search of the Cure for Malaria
By Mark Honigsbaum "THERE ARE ONLY TWO TOPICS of conversation on the Orinoco during the rainy season: the humidity
and the mosquitoes..."
This relegates Cross to a secondary role!!!
Royal Botanic Gardens Kew Bulletin Additional Series III Rubber , London 1906