For the episode "The Big Goodbye", the production team inserted pages from the mystery novel Dangerous Ground to stand in for actual pages of a Dixon Hill novel. When Data was researching the Dixon Hill series, these pages would appear on the viewscreen. In 1987, these pages were illegible. Nearly thirty years later, these pages were legible via high-definition resolution. In Dangerous Ground, on page 73, the protagonist and narrator Dr. John Rawley described an afternoon with a quote from Poe's "The Fall of the House of Usher".