Complex sentence: Many distinguished writers have been contributors, including T. S. Eliot, Henry James, and Virginia Woolf, but reviews were normally anonymous until 1974, during which year signed reviews were gradually introduced under the editorship of John Gross.
Split into simpler sentences: Many distinguished writers have been contributors, including T. S. Eliot, Henry James, and Virginia Woolf, but reviews were normally anonymous until 1974. From 1974, signed reviews were gradually introduced under the editorship of John Gross.