List members may find the following a useful reference:

http://www.esd.ornl.gov/ern/qen/adams1.html

Abstract:

A set of preliminary, broad-scale ecosystem map reconstructions is
presented for the world at the Last Glacial Maximum (18,000 14C years ago)
and the early Holocene (8,000 14C years ago), the mid Holocene (5,000 14C
years ago) and for comparison 'present-potential' maps that may be regarded
as approximating the late Holocene vegetation distribution as it would - or
might - have been without agricultural modification. The maps were produced
through consultation with an extensive network of experts and a range of
literature and map sources, with the final decision in each case made by
the editors. Accompanying each regional map is a general background text
detailing the principal sources of evidence and the
major uncertainties within this.

These maps are not intended as the 'last word' on the distribution of
ecosystem types at these times - they are merely a rough attempt at
appraisal of current knowledge and opinion. Nevertheless, the maps and the
accompanying literature review should provide a valuable and readily
accessible source of information on current opinion in the Quaternary
community. It is also hoped that they will act as a forum for discussion on
the distribution of palaeovegetation amongst those who are working in each
region.