![[Public talks]](/treetop40.gif){kind=small}
If you work in or near the University of Arizona you might find the program of public tree-ring talks interesting. These are generally held at Tree-Ring Lab West, Building 45, Room 20, enter east side door (formally old Purchasing and Stores Building) in the middle of the day: check the program for specific times and locations.
![[Learn crossdating]](/skel.gif){kind=small}
Paul Sheppard has written an introduction to skeleton plotting, a technique used to help crossdate tree-ring patterns. This introduction is not only a descriptive guide that includes much background information on crossdating in general, but also features an interactive page where you can try your hand at crossdating at various levels of difficulty.
![[Find references]](/disk40.gif){kind=small}
You can search the on-line version of Henri Grissino-Mayer's bibliography of dendrochronology to compile lists of references in particular areas or topics.
If you need to contact someone here, but can't find the
details of how to reach them, the telephone number for the
Laboratory administrative office is +1 520 621
1608, and the fax number is +1 520 621
8229. The postal address is
Groups can arrange to be given a guided tour of the
Laboratory: contact Rex Adams (+1 520 626 3617,
radams@LTRR.Arizona.EDU) if you are interested. As well
as these Web pages we also maintain a anonymous
FTP server, but this will not work with some client
programs, (however many of the files are available through
both systems). You can use this FTP site to exchange files
with people here: you can collect the files they leave in
the OUTGOING directory, and deposit your own
files in the INCOMING directory (but will not
then be able to see or alter them).