Air Apparent is the thirty-first book of the Xanth series by Piers Anthony, which was first mentioned in the "Author's Note" in Currant Events. Piers Anthony stated that notions from his readers have already been set aside for use in this installment in the same "Author's Note."
Letters to Jenny is a collection of letters written by Piers Anthony to Jenny Gildwarg, a 12-year-old girl who was run over by a drunk driver on Dec 9th, 1988. The book also contains news of Jenny's progress after the accident.
Stork Naked is the thirtieth book of the Xanth series by Piers Anthony.
Var the Stick is a book published in 1972 that was written by Piers Anthony.
Sos the Rope is a book published in 1968 that was written by Piers Anthony.