Sheet 92B/SE [Maingkwan (Mungkawm)] First Edition 1923, reprinted 1942. Burma: Myitkyina District & Unadministered Area. 1st Edition 1923; Reprinted 1942 with major corrections. Seasons 1918-19, 1920-22. Edition date 1923. Registered 1922. Heliozincographed SIO Dehra Dun. Reg.No.2269 D'22 '42–14,500. Black and brown printing; no boundary colour. Printed black 'For official use only' and with Grid IIB (Yards).