Sheet NI-37-XXII Raqqa GSGS 4195 Second Edition–GSGS 1951. Published WO 1941. Compiled and drawn SGFFL January 1945. Second Edition 1951. Reproduced from PDR 589/11668 2nd Edn 1945 by OS 1951. 9000/6/51. Levant Grid; Caucasus Grid. [Equivalent to I-37D.]