"The Apparition in the Prize Ring" was published in Ghost Stories in 1929. This pulp was a little different from most. It was an oversize magazine format, 8x12, and featured stories from various people who were telling allegedly true stories. REH sold them a weird boxing story, writing as John Taverel, the mythical manager of a mythical black fighter named Ace Jessel. This is one of the few stories where the protaganist is black, as is the antagonist. For those curious about REH's views on race, this is a good story to read. This story has never been reprinted in any mainstream publication.