File R 688/1880 - Papers regarding the experimental manufacture in Britain of quinine and other extracts from bark sent from the Government cinchona plantations on the Nilgiris
File R 707/1880 - Correspondence regarding the transmission to India of cinchona plants from the Royal Botanic Gardens at Kew in the charge of Robert Cross
File R 656/1880 - Correspondence with Sir Joseph Hooker regarding the transmission to India of Santa Fe cinchona plants from the Royal Botanic Gardens at Kew in the charge of Robert Cross