|Last update 15 January 2020.|
More reading and references:
The International Tree-Ring Data Bank (ITRDB)
Do publish your data at the ITRDB! It can be of great use for other people interested in dendrochronology. My own data from the island of Nämdö in the Stockholm archipelago is published here. We are now a few dendro amateurs from Sweden who have published our data at the ITRDB!
Denmark and Norway: