Burmah-Siam frontier. The Kyaington-Chiengmai Mission. Mr Archer's reports. Concessions to Siam E Neel, Political and Secret Dept, India Office, 11 Nov 1891
Keng Cheng (Kyaing Chaing). French evidence of the Burmese suzerainty over this state. 1894 E Neel, Political and Secret Dept, India Office, 1 Dec 1894