Willie Lincoln was the son of Abraham Lincoln, although he died before his father. After Willie Lincoln's death, his father once admitted that, every day, he would catch himself involuntarily talking with his son. (MM: "The Curse of Frank Black")
- "The Curse of Frank Black" begins with Abraham Lincoln's quote, "Do you ever find yourself talking with the dead? Since Willie's death, I catch myself every day, involuntarily talking with him, as if he were with me".