----------------------------Original message---------------------------- As I remember, JOGs are distributed on deposit to libraries which have selected them as a depository item. Since they are published by the US government, they are not copyrighted, and so the author of the book you mention could lift as much as they needed for use in the book, i.e., go to the library and make photocopies and use them. This all assuming that the sheets you need have actually made it to the library, as we experienced long stretches of time when nothing arrived from the DMA. I also know of members of the public who have tried to purchase JOGs from DMA/GPO/etc and been told they are not for sale. The 1:250,000 scale is considered too detailed and thus sensitive. You can try for the 1:500,000 series, but the only thing I've actually seen being sold is the 1:1,000,000 ONC (Operational Navigation Chart) series. Thus proving how wonderful map collections in libraries are! All of the above my experience at The New York Public Library Map Division. ***************************************************************** April Carlucci [log in to unmask] The British Library Map Library London *****************************************************************