In 1830, near the Boston Harbor, David Walker discreetly concealed a pamphlet within a sailor’s coat lining at a clothing store. Though physically unobtrusive, its contents were profoundly impactful. Regarded by many in the US government as an exceptionally perilous document in American history at the time, Walker had to employ various tactics, including enlisting both willing accomplices and unwitting sailors, to disseminate it clandestinely across the nation. But what exactly did this inflammatory document entail, and who was its author?