He had been an advertising executive, book publisher and, since the mid-1990s, a consultant and free-lance journalist for many leading business information technology magazines.
Between 1962 and 1971 he published many books by Derleth, some under his Candlelight Press imprint, and researched his former colleague's life and time for nearly forty years.
Ruber drew criticism[1] for the hostile opinions of various authors he expressed in his story introductions within his anthology Arkham's Masters of Horror (2000).
He also began editing for Battered Silicon Dispatch Box all of Vincent Starrett's works, with 22 of a projected 25 volumes already in print.
Rumours of his ill-health circulated for some time; he suffered a stroke in 2004 and his editorial duties at Arkham House lapsed due to this.