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Subject:
Re: USGS depiction of canals
From:
Angie Cope <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Fri, 19 Jul 2013 11:42:13 -0500
Content-Type:
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----- Forwarded Message -----
From: "Edward James Redmond" <[log in to unmask]>
To: "[log in to unmask]" <[log in to unmask]>
Sent: Friday, July 19, 2013 11:37:56 AM
Subject: RE: USGS depiction of canals


Mr. Dean:

While I cannot speak to the method of depicting particular features such as your canals, additional editions and different scale USGS maps can be accessed on the USGS TopoView web site - http://ngmdb.usgs.gov/maps/TopoView/

Ed

Ed Redmond
Geography & Map Reference Specialist
Library of Congress
Washington, DC 20540 - 4650
[log in to unmask]
202-707-8548



----- Forwarded Message -----
From: "Cartographics" <[log in to unmask]>
To: [log in to unmask]
Sent: Friday, July 19, 2013 9:02:21 AM
Subject: USGS depiction of canals


Can anyone explain why navigable canals are so poorly treated on early USGS one-inch maps?
For example, I have the Buffalo area of New York State surveyed 1898-1900, on which it is difficult, almost impossible in parts, to pick out the Erie Canal which was so important to the growth and economy of this area.  What were the criteria for showing such features, and did the depiction improve on later editions?
Richard Dean

--
Administrator of the Canalmaps Archive (www.canalmaps.net)

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