Introductions To Books And A Book Of Introductions?

An introduction to a book can be written by the author or by someone else. There can be introductions to different editions. An introduction can outline the factual background to the text or can address the issues that it raises. Alternatively, an introduction can be an additional layer of the fiction as when Le Matelot, otherwise unknown but clearly identifying himself as a participant in Technic civilization, introduces Poul Anderson's Trader To The Stars or when Hloch of Stormgate Choth on Avalon introduces Anderson's The Earth Book Of Stormgate as well as each individual instalment collected in the Earth Book.

Thus, in the Earth Book, Hloch introduces "Lodestar." The Technic Civilization Saga, compiled by Hank Davis, includes Hloch's introduction but also reproduces Anderon's own earlier introduction as an afterword.

Poul Anderson's introduction to Vault Of The Ages is a factual account of archaeology and time capsules whereas Brian Aldiss' introduction to a later edition of Brain Wave addresses the issues that the novel raises.

A collection of introductions to major works as a lead in to reading some of the works themselves?