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-------- Original Message --------
Subject: date code for maps reference question from patron
Date: Thu, 6 Dec 2012 14:00:07 -0500
From: Redmond, Edward James <[log in to unmask]>
To: 'Maps, Air Photo, GIS Forum - Map Librarianship'
<[log in to unmask]>
All:
I received a question from a patron looking who is "looking for map date
code information for Arrow Maps, R L Polk, or Arrow Publishing and
finding it indecipherable".
( I assume that the patron is cataloging their own collection)
Of course, WAML has some info from David Cobb on its date code page (
http://www.waml.org/datecode.html#arrow ) but can anyone out there in
map land suggest other sources?
"Arrow Map
A number which often appears on the panel or in the margin of a map.
Take the last two digits of the last four numbers and invert them, e.g.,
3680 1209R = 1990. Do not confuse with the stock number, which is also
in the same vicinity. (Source: David Cobb, Harvard Map Collection)"
Ed Redmond
Geography & Map Reference Specialist
Library of Congress
Washington, DC 20540 - 4650
[log in to unmask] <mailto:[log in to unmask]>
202-707-8548
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