[gpl_list] FW: Historical map atlas of slick convenient access

[Rachel Smith]

FYI...  see below.

Rachel Lyles Smith, GISP
Project Operations Manager

OR Dept. of Geology & Mineral Industries
800 NE Oregon St. Suite 950
Portland, OR  97232
971-673-0481 phone


-----Original Message-----
From: David Sherrod [mailto:dsherrod at usgs.gov]
Sent: Thursday, July 03, 2014 2:37 PM
To: Deb Schueller
Subject: Other log alert: Historical map atlas of slick convenient access

Not strictly a geology thing, but topography is landform is geology.

ESRI has released a USGS Historical Topographic Map Explorer application that allows users to access historical maps as high-resolution georeferenced images for use in web mapping applications. The web display features a timeline to easily select the desired maps.

http://historicalmaps.arcgis.com/usgs/

You can zoom to the area of interest (double clicking or magnify tool), then mark a point by single click, which spawns a timeline showing the names, scales, and dates of publication for the topographic maps that cover your mark. A tap on any of those anchors brings a particular map onscreen (download button present, too).
Multiple maps can be stacked onscreen: in my testdrive, for example, the 1901 Baker City map (1:125,000) in background, overlain by the
1965 Baker quad (1:24,000).


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