Hobart based Tasmanian historical group and publisher in existence since 1951. The Launceston Royal Society became the Launceston Historical Society in 1988.
Earlier groups concerned about history and historical preservation occurred in the 1890s and 1920s. The Tasmania Society in the 1930s (then the Historical Society of Tasmania in the 1940s) was another group that preceded the association.
The association has been a publisher of a long lasting Papers and Proceedings and various books on Tasmanian history.
The THRA is a constituent member of the Federation of Australian Historical Societies.
More information on the Wikipedia page 
The website is