Hello, When I was taking a map librarianship class, I learned that at the beginning of World War II, there were several large map collections that provided maps in their collections to the war effort. As compensation, after the war, those collections (AGSC was among them) received large numbers of captured maps, in addition to getting their maps back. That is why some libraries might have large collections of captured maps. Some map collections might have received maps from nearby military bases as well. Linda Zellmer -- Linda Zellmer Government Information & Data Services Librarian Liaison to Natural & Physical Sciences & Agriculture 415 Malpass Library Macomb, IL 61455 [log in to unmask] Phone: 309-298-2723 <callto:309-298-2723> Fax: 309-298-2791 <callto:309-298-2791>