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Date: Tue, 8 Oct 2002 09:22:22 -0400
From: "Mark A. Thomas" <[log in to unmask]>
Subject: AMS edition numbers
Sender: "Mark A. Thomas" <[log in to unmask]>



I want to make absolutely sure about the edition designations on old AMS
maps, especially those with two parts, as in the example below.

They often say something like "First Edition - AMS 3"
I used to think that "3" was a print run.  For instance, I assumed that
"First Edition - AMS 1" has the same content as "First Edition - AMS 3"
(except for margin details and obvious overprinting of grid lines,
etc.). The dates seem to imply this. For instance on AMS 1102, both of
above examples on one sheet say 1943, but the AMS 1 example also says
4-44 and the AMS 3 says 6-46.

Unfortunately, I saw substantive differences (like in the names of
towns, or towns that were identified on one but not the other) on sheets
in AMS 1102 that were designated as above, so my guess may be wrong.
But, it doesn't seem to make sense for both "first" and "3" to refer to
editions. Is there some sort of major and minor revision concept going
on here?

I've always figured the "AMS" in the above designation refers to the
provenance of the cartography.  For instance, an AMS map that says
"First Edition - GSGS 4" is a reprint of a GSGS map.

Sometimes the sheets just say (I think) "AMS 3" or "AMS 1"
What would that indicate?

There are other variations as well.  Any detailed explanation is
welcome.

Thanks,
        Mark
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mark Thomas / [log in to unmask] / 919-660-5853, fax:919-684-2855
Economics, Geology, Geography Bibliographer
Map and GIS Librarian / Public Documents and Maps Department
025 Perkins Library / Duke University, Durham, NC 27708-0177
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