The Harper Hall trilogy is a series of three science fiction novels by the American-Irish author Anne McCaffrey. They are part of the Dragonriders of Pern series as it is known today, 26 books by Anne or her son Todd McCaffrey or daughter Gigi McCaffrey as of 2018. They were published by Atheneum Books in 1976, 1977, and 1979, alongside the Dragonriders of Pern series. Omnibus editions of the two trilogies were published by the Doubleday Science Fiction Book Club in 1978 and 1984, titled The Dragonriders of Pern and The Harper Hall of Pern respectively.

The Ship Who Sang (1969) is a science fiction novel by American writer Anne McCaffrey, a fix-up of five stories published 1961 to 1969. It is also the title of the 1961 novelette which is the first of these stories. The series started by the book, the "Brain & Brawn Ship series", is sometimes called the "Ship Who Sang series".