I agree that it may be a mistake/typo. Think of the swath/width of a stereoscopic aerial from a plane flying at 25 feet… Ed Redmond Reference Specialist Curator, Vault Collections Geography & Map Division Library of Congress 101 Independence Ave. SE, LM-B01 Washington, DC 20540-4650 Voice: 202-707-8548 [cid:image001.png@01D4993B.FE4F7F50] From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Fry, Michael Sent: Friday, December 21, 2018 2:26 PM To: [log in to unmask] Subject: Re: WWII maps Aerials snapped from "reconnaissance planes flying at 25 feet [my emphasis]." Surely that's a typo or a mistake. On Fri, Dec 21, 2018 at 1:00 PM Christopher Thiry <[log in to unmask]<mailto:[log in to unmask]>> wrote: All, From "The Guns at Last Light: The War in the Western Europe 1944-1945" by Rick Atkinson. "Armed guards from 10 cartography depots escorted 3,000 tons of maps for D-Day alone, the first of 210,000,000 maps that would be distributed in Europe, most of them printed in 5 colors. Also into the holds [of the invasion fleet] went 280,000 hydrographic charts, town plats for the likes of Cherbourg and Saint-Lo, many of the 1,000,000 aerial photos of German defenses snapped from reconnaissance planes flying at 25 feet." Happy New Year to all! Christopher J.J. Thiry Map & GIS Librarian Academic Outreach Coordinator Colorado School of Mines Arthur Lakes Library 1400 Illinois Golden, CO 80401 p. 303-273-3697 f. 303-273-3199 [log in to unmask]<mailto:[log in to unmask]> http://www.mines.edu/library/ -- Michael Fry Collections Manager | Map Library Manager National Geographic Society Library 202.807.3139 [log in to unmask]<mailto:[log in to unmask]> [Nat Geo Logo Yellow_Black.png]<http://www.nationalgeographic.org> 1145 17th St., NW, Washington, DC 20036 [Email-Signature8.gif]<https://donate.nationalgeographic.org/em-sig>