Gerrold is also the author of the Star Wolf series of books, centered on the star ship Star Wolf and its crew: Voyage of the Star Wolf (1990), The Middle of Nowhere (1995), Blood and Fire (2004), and Yesterday's Children (1972) which is actually an earlier novel that features the same main character, later significantly expanded and republished as Starhunt (1985)—it occurs prior to the other novels in the series' main continuity. The initial germ of Yesterday's Children was the "framing" story in his early Star Trek proposal "Tomorrow was Yesterday", much altered over time. Gerrold had planned to develop this concept into a TV series, as he writes in an introduction to Voyage of the Star Wolf. The Star Wolf series reflects Gerrold's contention that, due to the distances involved, space battles would be more like submarine hunts than the dogfights usually portrayed—in most cases the ships doing battle would not even be able to see each other.
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