Waters' Book of the Hopi (1963, pp. 333-334) gives White Feather's ninth sign: a dwelling-place in the heavens that falls with a great crash and appears as a blue star, after which Hopi ceremonies cease; Mexico Mystique (1975) supplies the name Saquasohuh. Thomas Banyacya carried the warning to the UN Habitat Forum in 1976 and the General Assembly on December 10, 1992: the gourd of ashes had already fallen, twice.
Jason Colavito's archival search found no Blue Star Kachina in print before 1963, and no nine-signs checklist before Jochmans' Rolling Thunder (1980). The earliest trace is Methodist pastor David Young, who picked up a hitchhiker called White Feather in 1958 and wrote the signs from memory, in a pamphlet carrying strong Christian apocalyptic framing. The 1987 Harmonic Convergence drew thousands to Prophecy Rock; no Hopi participated, and elders decried it.
Armin Geertz's The Invention of Prophecy (1994) argues Hopi prophecy is continuously recreated to read current events, and that roughly ninety percent of printed prophecy statements came from three Traditionalist spokesmen, Katchongva, Monongye and Banyacya, in a factional contest the Tribal Council side mostly answered with silence. In 2000 the Hopi Cultural Preservation Office wrote to a self-declared carrier of Hopi prophecy telling him to stop.
The most quoted Native prophecy in the world cannot be found in print before 1963; at what point does a text become a tradition?