Complex sentence: Every year at the British science fiction convention Eastercon, he would deliver a humorous speech; these were eventually collected in "The Eastercon Speeches" (1979) "A Load of Old Bosh" (1995).
Split into simpler sentences: Every year at the British science fiction convention Eastercon, he would deliver a humorous speech. These were eventually collected in "A Load of Old Bosh" (1995).