This dataset contains year-by-year tree inter-annual growth measurements (dendroecology, ring width) covering 1900-2019. European Beech tree cores were sampled in late 2019 at 12 sites in Bulgaria, Albania, Kosovo, and Spain. Measurements took place to fill the climatic gaps that European Beech Tree Ring Network (EBTRN) has not well covered at the hot and dry European distribution edges. Full details about this dataset can be found at https://doi.org/10.5285/5a749178-cc87-4ccc-88e5-ea7c464f067b
