Confidential, military technical manual for the interpretation of aerial photographs during WWII., This manual was originally issued in 1942 (date appearing on cover) but has a page inserted with the date of October 16, 1943. It has been stamped with the warning, "NOT TO BE PUBLISHED. The information given in this document is not to be communicated, either directly or indirectly, to the Press or to any person not holding an official position in His Majesty's Service." Located in Archives and Research Collections, accession number UK1 DH 43I51.