The Simpson tree can be found on the inside of the front cover, while the Bouvier family appears on the inside of the back cover. An interesting note is that Charles Montgomery Burns is included in the Simpson tree as Grandpa's fourth cousin via marriage. Homer is descended from Scandinavians and American Indians, which was even mentioned in the episode "Little Big Girl", while Marge is descended from the French. Another interesting note is that despite Amos Graycomb and Moselle Stemple marrying and having four children together, they are in fact second cousins.