Canon

Canon refers to all the information arising from the original, or officially sanctiones, material.

In Supernatural, in addition to the TV Show, canon covers material in the: The notion of what comprises the canon is subjective, and both fans and the creators of a body of material will have differing opinions on the topic. On this Wiki, canon from sources other that the TV Show contains a superscript tag to indicate ots source, so readers can ascribe their own hierarchy or value to the information.
 * Official Site
 * Comics
 * Supernatural novels: Nevermore and Witch's Canyon
 * The Official Companions: Season 1 and Season 2.
 * The Supernatural Book of Monsters, Spirits, Demons and Ghouls