Looks like the author is giving a tour/field trip out of Gunnison on this topic next week:
Western Elevated: Beneath Blue Mesa
Tuesday, June 6, 2023 9am to 3pm
Take a tour with David Primus to explore what was Beneath Blue Mesa! Dave has been researching this topic for over 20 years, and has recently published the book "Beneath Blue Mesa: The Gunnison River Valley Before the Reservoir." He will stop at various locations to point out and discuss the three towns, sixteen fishing resorts/hotels, and fifteen ranches that once existed along this 23-mile stretch of the Gunnison River.