The Children of Húrin was edited by Christopher Tolkien into final format and published in 2007.
The Silmarillion. Tolkien began working on the story in 1917. It was the first book he ever wrote and the last one to be published. His son, Christopher Tolkien, edited his father's work and it was published in 1977, four years after his father's death.
in 1999 her last book was published
"The Ballad of Songbirds and Snakes" published in 2020.
"Hooray For Diffendoofer Day!", published in 1998, was written after Dr. Seuss's death, based on his sketches and notes. It was finished by Jack Prelutsky and illustrated by Lane Smith. Dr. Seuss (aka Theodor Seuss Geisel) passed away in 1991.
The last book written by Barbara Cooney is "Miss Rumphius." It was published in 1982 and won the National Book Award for Children's Books in 1983.
"The Mysterious Stranger" is considered to be the last major work written by Mark Twain. It was published posthumously in 1916.
The last novel written by Toni Morrison was "God Help the Child," published in 2015.
Yes, written by journalist Giles Foden. It was published in 1998.
Probably Ecce Homo, written in his last years, but not published until after his death in 1900. While there have been a number of essays and collections of notes and other works and manuscripts that have been published since his death, I believe Ecce Homo was the last book written by Nietzsche before he died.
Mockingjay was published in 2010.
That is the last date in which the book was published or sent to print.
The first book was published is 1999 and the last book was published in 2006