Perhaps your student is already aware of this site, but just in case:

http://arborglyphs.com/

There's also a wikipedia entry under 'arborglyph.'  Also, this or a similar topic came up earlier on HistArch.  Search for 'culturally modified trees' and/or 'CMTs' at:

https://lists.asu.edu/cgi-bin/wa?A0=HISTARCH

Good luck,

Marty Perdue
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----- Original Message -----
From: Barbara Voss <[log in to unmask]>
To: [log in to unmask]
Sent: Thu, 20 Jan 2011 20:58:05 -0000 (UTC)
Subject: Los Angeles area dendrochronology?

Dear Hist-Arch'ers,
This query is on behalf of a student in our Modern Thought and Literature
program, who is studying historic graffiti in Los Angeles, including
graffiti carved into trees. He is interested in whether dendrochronology
might be able to aid in dating the graffiti, some of which appears to be
late 19th - mid 20th century. The incisions are primarily on eucalyptus
trees. Does anyone know a LA-area dendrochronologist who might be able to
assess whether this would be possible? 
Many thanks
--Barb Voss

-----------------------------------------------
Barbara L. Voss, Associate Professor
Department of Anthropology
450 Serra Mall, Bldg. 50, Main Quad
Stanford University
Stanford CA 94305-2034
650 723-3421 (dept office)
650 725-0605 (fax)
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