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Illinois Historic Aerial Photographs, 1936-1941

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Brown County

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Title	Brown County
Creator	United States. Agricultural Adjustment Administration
Contributors	Park Aerial Surveys, Inc.
Date Original	1938
Date Digital	2004
Subject [LCSH]	Brown County (Ill.)—Aerial photographs
Description	Flights flown between June 27, 1938 and August 18, 1938 by Park Aerial Surveys, Inc., for the U. S. Dept. of Agriculture, Agricultural Adjustment Administration. Photos numbered SC-1-24 through SB SC-41-3731. Scale not given. Stereoscopic coverage. Only indexes are georeferenced.
Coverage.Spatial	Brown County (Ill.) (W 90°55′--W 90°31′/N 40°06′--N 39°50′)
Contributing Institution	Illinois State Geological Survey
Format.Use	242 remote-sensing images, 665 megabytes, average file 2.7 megabytes
Format.Creation	Scanned from 7 x 9 contact prints (nominal scale ca. 1:20,000) on Crosfield 646IE drum scanning system at 750 dpi. Quality assurance target not published but available by contacting the Illinois State Library Map Dept. MrSID files compressed at a target ratio of 12:1. Uncompressed TIFF images on cd available from the Illinois State Library Map Dept.
Relation.Requires	Mode of access: World Wide Web. System requirements: Plug-in or image viewer, ExpressView Browser plug-in available for download. System requirements for interactive map: Internet Explorer best, frames and JavaScript enabled.
Identifier.URL	Text based access, through the accompanying scanned county line index: http://www.isgs.uiuc.edu/nsdihome/webdocs/ilhap/county/brown.html Interactive access, through the ArcIMS interactive map: http://www.isgs.uiuc.edu/nsdihome/webdocs/ilhap/launchims.html
Language	en
Type	Image

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