Question: What year was the society, which released the songbook in which "Carol of the Old Ones" was published, founded in Colorado?

full_context: Document 1: History of live action role-playing games: Live action role-playing games, known as LARPs, are a form of role-playing game in which live players/actors assume roles as specific characters and play out a scenario in-character. Technically, many childhood games may be thought of as simple LARPs, as they often involve the assumption of character roles. However, the scope of this article concerns itself mainly with LARPing in a technical sense: the organized live-action role-playing games whose origins are closely related to the invention of tabletop role-playing games in America in the 1970s.
Document 2: Call of Cthulhu: The Card Game: Call of Cthulhu: The Card Game (formerly the Call of Cthulhu Collectible Card Game) is a card game produced and marketed by Fantasy Flight Games. It is based on Chaosium's "Call of Cthulhu" role-playing game, the writings of H. P. Lovecraft, and other Cthulhu Mythos fiction. In 2008, Fantasy Flight moved the game over to its Living Card Game (LCG) format, which retains the deck-building aspect of collectible card games, but without the random distribution.
Document 3: 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").
Document 4: Mykola Leontovych: Leontovych was born and raised in the Podolia Governorate of the Russian Empire (present-day Ukraine). He was educated as a priest in the Kamianets-Podilskyi Theological Seminary and later furthered his musical education at the Saint Petersburg Court Capella and private lessons with Boleslav Yavorsky. With the independence of the Ukrainian state in the 1917 revolution, Leontovych moved to Kiev where he worked at the Kiev Conservatory and the Mykola Lysenko Institute of Music and Drama. He is recognized for composing "Shchedryk" in 1904 (which premiered in 1916), known to the English-speaking world as "Carol of the Bells" or "Ring, Christmas Bells". He is known as a martyr in the Eastern Orthodox Ukrainian Church, where he is also remembered for his liturgy, the first liturgy composed in the vernacular, specifically in the modern Ukrainian language. He was assassinated by a Soviet agent in 1921.
Document 5: Sacred Harp: Sacred Harp singing is a tradition of sacred choral music that originated in the American South of the United States. The name is derived from "The Sacred Harp," a ubiquitous and historically important tunebook printed in shape notes. The work was first published in 1844 and has reappeared in multiple editions ever since. Sacred Harp music represents one branch of an older tradition of American music that developed over the period 1770 to 1820 from roots in New England, with a significant, related development under the influence of "revival" services around the 1840s. This music was included in, and became profoundly associated with, books using the shape note style of notation popular in America in the 18th and early 19th centuries.
Document 6: Singing the Living Tradition: Singing the Living Tradition is a hymnal published by the Unitarian Universalist Association. First published in 1993 by the Hymnbook Resources Commission of the UUA, it was meant to be much more inclusive in both gender references, multicultural sources, and a wider number of religious inspirations. According to Jason Shelton,
Document 7: Cthulhu: Cthulhu ( ; for variant pronunciations, see below) is a cosmic entity created by writer H. P. Lovecraft and first introduced in the short story "The Call of Cthulhu", published in the American pulp magazine "Weird Tales" in 1928. Considered a Great Old One within the pantheon of Lovecraftian cosmic entities, the creature has since been featured in numerous popular culture references. Lovecraft depicts Cthulhu as a gigantic entity worshipped by cultists. Cthulhu's appearance is described as looking like an octopus, a dragon and a caricature of human form. Its name was given to the Lovecraft-inspired universe where it and its fellow entities existed, the Cthulhu Mythos.
Document 8: Christadelphian hymnals: The earliest Christadelphian hymn book published was the "Sacred Melodist" which was published by Benjamin Wilson in Geneva, Illinois in 1860. The next was the hymn book published for the use of "Baptised Believers in the Kingdom of God" (an early name for Christadelphians) by George Dowie in Edinburgh in 1864. ""The Golden Harp"" was put together in 1864 by Scotsman Robert Roberts. This was then followed a year later by first 'official' (as the Christadelphians had not been named as such until then) book, compiled also by Roberts, and was called simply ""The Christadelphian Hymn Book."" It contained 223 psalms/hymns and 50 anthems but no music. In 1869 Robert's produced a version of this book with music included.
Document 9: O Holy Night: "O Holy Night" (French: "Cantique de Noël" ) is a well-known Christmas carol composed by Adolphe Adam in 1847 to the French poem "Minuit, chrétiens" (Midnight, Christians) by a wine merchant and poet, Placide Cappeau (1808–1877).
Document 10: Call of Cthulhu (role-playing game): Call of Cthulhu is a horror fiction role-playing game based on H. P. Lovecraft's story of the same name and the associated Cthulhu Mythos. The game, often abbreviated as "CoC", is published by Chaosium; it was first released in 1981 and is currently in its seventh edition, with many different versions released. It makes use of Chaosium's Basic Role-Playing (BRP) system, with special rules for Sanity.
Document 11: Trail of Cthulhu: Trail of Cthulhu is an investigative horror role-playing game published by Pelgrane Press in which the players' characters investigate mysterious events related to the Cthulhu Mythos. It was designed by Kenneth Hite using the GUMSHOE System, which was created by Robin Laws. "Trail of Cthulhu" is based on the "Call of Cthulhu" role playing game under license from Chaosium.
Document 12: Arkham Horror: The Card Game: Arkham Horror: The Card Game is produced by Fantasy Flight Games. It is a cooperative game set in the universe of Chaosium's "Call of Cthulhu" roleplaying game which is based on the Cthulhu Mythos of H.P. Lovecraft and other horror writers. The setting of the game is based in the titular (fictional) town of Arkham, MA. The game was originally leaked in May 2016, before being officially announced in August of that same year. It made its first limited public release at Arkham Nights 2016 to a sold out crowd.
Document 13: Jolly Old Saint Nicholas: "Jolly Old Saint Nicholas" is a Christmas song that originated with a poem by Emily Huntington Miller (1833-1913), published as "Lilly's Secret" in "The Little Corporal Magazine" in December 1865. The song's lyrics have also been attributed to Benjamin Hanby, who wrote a similar song in the 1860s, Up on the Housetop. However, the lyrics now in common use closely resemble Miller's 1865 poem.
Document 14: Arkham Horror: Arkham Horror is an adventure board game designed by Richard Launius, originally published in 1987 by Chaosium. The game is based on Chaosium's roleplaying game "Call of Cthulhu", which is set in the Cthulhu Mythos of H.P. Lovecraft and other horror writers. It was revised and reprinted by Fantasy Flight Games in 2005. In this game, players take on the role of investigators in Lovecraft's Massachusetts town of Arkham. Gates to other planes open throughout the town. If too many gates open, a powerful alien being will enter, likely destroying the town and possibly threatening the world. The investigators must avoid or fight alien creatures that enter Arkham through the gates, enter the gates themselves, survive the alien places beyond, return to Arkham, and close the gates.
Document 15: Carol of the Old Ones: "Carol of the Old Ones" is a song originally published in the 1988 HPLHS Solstice Carol Songbook, released by the H. P. Lovecraft Historical Society. With lyrics written by Andrew Leman, it is sung and performed to the tune of "Carol of the Bells" by Mykola Dmytrovych Leontovych (itself sung to the tune of Shchedryk), with soprano lead vocals and four-part harmony at various points in the song. The song is performed by The Dagon Tabernacle Choir; the performers' names are Rebecca Marcotte, Digby Dolmen, J.D. Titan, and Walter Forsythe. It can be found on the album "A Very Scary Solstice".
ground_truth: 1984