Bloxam, W Popplewell and Leake, H M, Account of the research work in indigo carried out at Dalsingh Serai Research Station 1903 - March 1904. Calcutta, 1905
Fraser, J D, Account of dyes and dyeing in Burma. Rangoon, 1896; Leveson, H G A, Note on dyes and dyeing in the Southern Shan States. Rangoon, 1896; Giles, F H, Note on the dyes and process of dyeing in Karenni. Rangoon, 1896