University of Nevada at Reno DendroLab
- A part of the geology department at the university. Page includes a downloadable statistical tool, GIS climate series mapping information, and fieldwork photos.
- http://woods.geography.unr.edu/

Sheffield Dendrochronology Laboratory
- Teaching and research at the University of Sheffield. Includes "What is Dendrochronology?" and information about the lab's consultancy services and continuous master tree-ring sequence for England going back to about 5000 BC.
- http://www.shef.ac.uk/archaeology/research/dendrochronology

Oxford Dendrochronology Laboratory
- An independent tree-ring dating laboratory concentrating primarily on the dating and analysis of standing timber structures. Projects, publications, the dated buildings register.
- http://users.ox.ac.uk/~arch0050/

University of Arkansas Tree-Ring Laboratory
- Research concentrates on the development of exactly-dated annual tree-ring chronologies from ancient forests worldwide.
- http://www.uark.edu/misc/dendro/

University of Western Ontario Dendrogeomorphology Laboratory
- Information about people, facilities, and methods and results of research focused on the use of tree rings as dating and paleoclimatic tools in the Canadian Cordillera of Alberta and British Columbia.
- http://www.ssc.uwo.ca/geography/faculty/luckman/trl/index.html

International Tree Ring Laboratory
- Dr. habil Martin Worbes' tree-ring research in temperate, tropical, and subtropical regions.
- http://www.gwdg.de/~mworbes/

Dendrochronology
- A brief primer on the subject of dating past events by looking at tree rings.
- http://www.sonic.net/bristlecone/dendro.html

Laboratory for Wood Anatomy and Dendrochronology, Lund University
- About the laboratory, current and past research activities, and links to other tree-ring websites, particularly in Europe.
- http://www.geol.lu.se/personal/ore/netsc/dendro.xtm

Euro Catalogue
- Searchable database of European dendro-chronology, compiled by Dr Tom Levanic, Biotechnical faculty, Ljubljana, Slovenia. Information on laboratories, accessed via search or sensitive map.
- http://www.dendro.bf.uni-lj.si/first.html

The Ultimate Tree-Ring Web Pages
- Organized collection of information and links on tree-ring research, or dendrochronology, by Henri D. Grissino-Mayer.
- http://web.utk.edu/~grissino/

Rocky Mountain Tree-Ring Research, Inc.
- Rocky Mountain Tree-Ring Research is a nonprofit research organization that provides expertise in tree-ring data collection and analysis.
- http://www.rmtrr.org/

Lamont-Doherty Tree Ring Lab
- Scientists from the TRL are actively involved in pioneering research projects in many parts of the globe; from the high latitudes of both hemispheres to the low-latitude tropics of Asia and the Americas.
- http://www.ldeo.columbia.edu/trl/index.html

ADVANCE-10K
- Analysis of dendrochronological variability and natural climates in Eurasia over the last 10,000 years. Research by the University of East Anglia Climatic Research Unit.
- http://www.cru.uea.ac.uk/adv10k/

Aegean Dendrochronology Project
- Site discusses the use of tree rings in dating and climatic reconstruction, as part of archeological studies. From Malcolm and Carolyn Wiener Laboratory for Aegean and Near Eastern Dendrochronology, at Cornell University.
- http://www.arts.cornell.edu/dendro/

Laboratory of Tree-Ring Research, University of Arizona
- Teaching and research in all aspects of dendrochronology.
- http://www.ltrr.arizona.edu/