 Among the very many topics Anscombe worked on, her ideas about the role of testimony have prefigured or influenced much contemporary thought on the topic. We will summarize three of her short but important papers on testimony: “Hume and Julius Caesar” (HJC), “What Is It to Believe Someone?” (WBS), and “Authority in Morals” (AIM), each of which heralds ideas that gained prominence in philosophy only later.