The Urth of the New Sun: The sequel to 'The Book of the New Sun'

Calde of the Long Sun: The Third Volume of the Book of the Long Sun

Gene Wolfe

amazon.com
Cover of Calde of the Long Sun: The Third Volume of the Book of the Long Sun

Nightside The Long Sun: The First Volume of the Book of the Long Sun

Gene Wolfe

amazon.com
Cover of Nightside The Long Sun: The First Volume of the Book of the Long Sun

Lake of the Long Sun (Book of the Long Sun 2)

Gene Wolfe

amazon.com
Cover of Lake of the Long Sun (Book of the Long Sun 2)