Sheet 2 Ahwar Provisional Sketch Map RAF Edition 1947, reprinted MDR Misc 11802 1955. Surveyed March 1945 to April 1947 by compass traverse and astro-fixes. Intervening details from 1:500,000 AAF preliminary base maps 687B-C 1946, 1:253,440 GSGS 3937 1938, 1:500,000 von Wissmann Hadhramaut, air sketch maps, air photographs, Political Officers sketch maps, and 1:1,000,000 Philby Routes in SW Arabia. Surveyed, compiled and drawn by Sq-Ldr D Bellerby RAF May 1947. MDR Misc 11802. Reprinted ...