-------- Original Message --------
Subject: Invisible property stamps?
Date: Wed, 4 Sep 2013 00:46:14 +0000
From: Weessies, Kathleen <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>


Lately I've been reading about map library practices for marking maps,
particularly rare and valuable maps.  Once in a while in the literature
there is a mention of invisible property stamps that only show up in
certain lighting.



I haven't met anyone who uses this kind of stamp (or maybe I did and it
is a closely guarded secret!).



Anybody have any comments on this practice?



Kathleen Weessies
Geosciences Librarian
Head, Map Library
Michigan State University
517-884-0849