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").
Historical Society of Western Pennsylvania The Historical Society of Western Pennsylvania (HSWP) is a cultural organization in Pittsburgh, Pennsylvania. After several attempts during the early and mid-century to establish a historical society, an organization called Old Residents of Pittsburgh and Western Pennsylvania was formed on January 10, 1859. Five years later the group changed its name to Historical Society of Western Pennsylvania.