"Weinberg's work is so ground-breaking, his research so arduous, and his precursors in this field so generally unhelpful that we must regard this as charting virtually unexplored waters. There is nothing really to compare the book to, and there is not likely to be a more complete such book in the near future. Weinberg deserves the thanks of anyone seriously interested in what we might call the cultural history of SF, and his book belongs in any collection that purports to represent that history."
Science Fiction Studies