Deseret Evening News publishes death notice of Edwin Rushton and makes no mention of the White Horse Prophecy.
Deseret Evening News, December 30, 1904: 2
RUSHTON— At his residence, 538 south Eighty West, this city. Dec. 28, 1904, from old age, Edwin Rushton, aged 81 years.
Funeral will be held from the Sixth ward meetinghouse, Sunday, Jan. 1, at 11:30 o'clock.
Do note that the article contains an error: Rushton died on December 27, not 28 (Rushton's death cert lists his date of death as December 27, 1904).