Doctor Who and Verdigris (in-universe)

 was a book that was cited Paul Magrs wrote about when the visited the Doctor during his exile on Earth, while he was the "disgruntled lord" of his own manor. Iris had been involved in a "ghastly plot" to make the Doctor think he was losing his mind over the fake alien invasions that she had been creating in the 1970s. (PROSE: Bafflement and Devotion)