• Cregg, B. (ed.). 2022. Proceedings of the 15th International Christmas Tree Research and Extension Conference 2022; Fallen Leaf Lake, California, USA; 5-9 July 2022.

• Marie-Claude Lavoie and Marylaine de Chantal (eds.). 2019. Proceedings of the 14th International Christmas Tree Research and Extension Conference 2019; Quebec City, Canada; 26-30 August 2019.
   
• Brynar Skúlason, Pétur Halldórsson (eds.). 2019. Proceedings of the 13th International Christmas Tree Research and Extension Conference; Akureyri, Iceland; 3-8 September 2017.
   
• V. Talgø & I. S. Fløistad (eds.). 2015. Proceedings of the 12th International Christmas Tree Research and Extension Conference; Honne, Norway; 6-11 September 2015.
   
• Mason MacDonald (ed.). 2014. Proceedings of the 11th International Christmas Tree Research and Extension Conference. Truro, Nova Scotia, Canada, August 10 – 14, 2013.
   
• Landgren, C. (ed.). 2012. Proceedings of the 10th International Christmas Tree Research and Extension Conference. Eichgraben, Austria, August 21–27, 2011.
   
• Hart, J., Landgren, C., and Chastagner, G. (eds.). 2010. Proceedings of the 9th International Christmas Tree Research and Extension Conference. Corvallis, OR and Puyallup, WA., September 13–18, 2009. 124 pp.
   
• Thomsen, I.M., Rasmussen, H.N. & Sørensen, J.M. (Eds.) 2008: Proceedings of the 8th International Christmas Tree Research and Extension Conference. Forest & Landscape Working Papers  No. 26-2008, 145 pp. Forest & Landscape Denmark, Hørsholm. Proceedings of the 8th International Christmas Tree Research & Extension Conference
   
• Fulbright, Dennis, ed. 2007.  Proceedings of the 7th International Christmas Tree Research & Extension Conference.  2-7 OctOctober 2005. Kettenen Center, Tustin MI. 89p.

• Frampton, J, ed. 2004. Proceedings of the 6th International Christmas Tree Research & Extension Conference. 14-19 September 2003. Hendersonville, NC. 176 p.

CTRE News Volume 6, Issue 1, 2019

CTRE News Volume 5, Issue 1, 2017

CTRE News Volume 4, Issue 1, 2013

CTRE News Volume 3, Issue 1, 2010

CTRE News Volume 2, Issue 1, 2009

CTRE News Volume 1, Issue 1, 2008

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As of October 2009, the Unit's newsletters are edited by Bert Cregg, United States. Before that date, the newsletters were edited by Pascal Nzokou.

Christmas Tree Research and Extension Sites

North Carolina State University     https://christmastrees.ces.ncsu.edu/
NCSU Genetics     https://cnr.ncsu.edu/fer/research/forest-genetics/
New Mexico State University     https://aces.nmsu.edu/
Penn State University     http://ento.psu.edu/extension/christmas-trees
Ohio State University     http://ohioline.osu.edu
Oregon State University     https://extension.oregonstate.edu/nwrec/christmas-trees
Washington State University     https://puyallup.wsu.edu/
University of California     http://cecentralsierra.ucanr.edu/Agriculture/Christmas_Trees/
University of Copenhagen, Denmark     http://ign.ku.dk/english/research/forest-nature-biomass/forest-genetics-diversity/
NIBIO Norway      http://www.nibio.no/
Norwegian Institute of Bioeconomy Research     https://www.nibio.no/om-nibio/vare-fagdivisjoner/divisjon-for-bioteknologi-og-plantehelse
Dalhousie University, Canada     https://www.dal.ca/faculty/agriculture/research/labs_groups_facilities/christmas-tree-research-centre.html  
Michigan State University     https://www.canr.msu.edu/
European Christmas Tree Growers     http://www.ctgce.com/index.php/en/