The Brown Bee Network is a group of beekeepers and scientists that are interested in saving the Brown bees from extinction in the Nordic countries. The secretariat of the group is the Farm Animal section of the Nordic Genetic Resource Center (NordGen) The group initially compiled a report on the status of the Brown Bee in the Nordic and Baltic countries. This report, published in 2014, can be downloaded here. A year later the report was followed up by a Plan of Action for the conservation of the Nordic Brown bee. This wiki is a result of the Plan of Action.
Of course there are many local organisation with the same aim; also outside of the Nordic countries. You can find a list of links here. And there are more an more scientific studies being published about Apis mellifera mellifera. Here is a list of scientific publications.