Ohio 1900 Maps - More
Historic Topo Maps - 1950's 60' Topo Maps
The U.S. Geological Survey,
in cooperation with the State
of Ohio, began a new toporgraphic survey of Ohio in the
1950s. Each detailed printed map covered a 7.5 minute section
(quadrangles). These maps have been updated and reprinted
a number of times.. The current 1990's updated versions are
available in print and digitally (terraserver, maptech,
etc.), but the original maps are hard to find. The 1950's
versions are useful in looking at railroads before they were
abandoned and how communities changed over time.
USGS now has Ohio and Pensylvania Historic Topos available for free download
Most are from the Cleveland Public Library Map Collection and scanned in one
file on their 48" wide scanner. Each
file is between 1-3 Megabytes. To
view the the maps you need a free
web browser plug-in from djvu.com (available for Mac,
Windows and Unix/Linux). Give your browser plenty of extra
memory by closing other unneeded programs. The quality
of the files is excellent and well worth the wait. DjVU
allows fast zooming and panning once the file is fully
loaded, but can be viewed while still loading. You can
also save the map files to your computer. Right click (Windows),
and choose "Save Target As..." Open the files
using your browser's open command in the file menu. Make
sure all file types are displayed in the browser
open dialog box. |