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Archive for November, 2010

2010 Concord GIS map

When  locating Thoreau’s surveys,  begin by  comparing the current GIS 2010 Concord  map  with Gleason’s 1906 Concord map,  F. W. Beers’  1875 Concord Map, and Walling’s 1852 Concord Map below.

current GIS 2010 Concord  map

Note the Hawthorne Lane Bridge correctly located.

http://www.mapsonline.net/concord/

Gleason’s 1906 Concord map

Walling’s 1852 Concord Map

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