What year was the society, which released the songbook in which "Carol of the Old Ones" was published, founded in Colorado?
H. P. Lovecraft Historical Society The H. P. Lovecraft Historical Society or HPLHS is the organization that hosts Cthulhu Lives!, a group of live-action roleplayers for the "Cthulhu Live" version of "Call of Cthulhu". Founded in Colorado in 1984, it is now based in Glendale, California. Their motto is "Ludo Fore Putavimus" ("We thought it would be fun").
Manitoba Historical Society The Manitoba Historical Society is a historical society in the province of Manitoba, Canada. It was created by an act of the Legislative Assembly of Manitoba in 1879, and describes itself as "the oldest organization in western Canada devoted to the promotion of public interest in, and preservation of, the region’s historical resources". The society publishes a journal called Manitoba History.