DJVU Luce, G.H. 1957, "Letter from Egerod to Luce, re OldThai inscriptions at Kengtung, 20/3/1957", in Luce Collection, MS 6574-7, pp. 043-044. National Library of Australia. cite.
DJVU Luce, G.H. undated, "Note re OldThai inscriptions at Kengtung by Luce", in Luce Collection, MS 6574-7, pp. 045a-b. National Library of Australia. cite.