	CASA early conceived the idea of producing an intelligence manual for each of the Japanese prefectures. The purpose of the manual was to provide the military government officer with a single volume of information, not elsewhere available in organized form, of a local and regional nature. OSS was asked to provide research materials of a classified nature, expert direction and supervision of research methods and techniques, and final editing and approval of each manual. In addition, a map packet was to constitute an integral part of each manual. Each map-packet was to contain 20 to 30 maps selected by OSS, covering the prefecture and its parts, and was also to include a map made especially for Military Government. OSS was to procure maps already produced from its own collection, from the hydrographic Office, G-2, and Army Map Service. The map, which was to be especially made for Military Government, was to be produced by CASA officers, making base maps and overlays, and OSS/Washington was to care for drafting and reproduction.