For a novel that postulates an alternative multiple-shooter narrative for the story of President John F. Kennedy’s assassination in 1963, I was tasked with telling this story using the very real geography of Dallas at the time. This involved tracking down historical aerial images and securing permission to use them in an adapted illustration, and using floor plans from the Warren Report to create a 3-D diagram of the Texas Schoolbook Depository to trace the two characters’ escape routes. An interesting geography to dive into, which I’d certainly read enough about, but never really grasped the layout of.