A number of recent biographers have speculated that Coolbrith and Mark Twain had a brief fling during his early days in California. Among the most recent articles on their relationship is one in the _Mark Twain Journal_, Spring/Fall 2017, "The Mormon Entombed in Mark Twain's Heart: Ina Coolbrith and Samuel Clemens" by Nicole Amare and Alan Manning, pp. 159-192. Barb