A set of 10 photographic maps of 5 different areas showing topography and defenses for the planned invasion of Anzio. Card covers marked in red pencil: "Strategic Intelligence Branch, Military Intelligence Division, Office Chief of Engineers", then "Beach (Pen & Ink) Sketches", lower right: Defence Information (by 5th Army PRV) as of Dec 11, 1943". Large folio format (10 x 13.5"), stapled in the left margin. Each photo marked "SECRET". Very good original vintage condition.