GSGS series 4228. Second Edition. Italian Istituto Geografico Militare map dated 1934 and revised from Air Photographs dated Aug 1943. Revised by 19th Field Survey Coy., R.E. June 1944 from Air Photographs, Aug. 1943. Printed by Estab. Grafico Vallecchi for D.D Svy. H.Q., A.A.I. July 1944. North Italy Grid.