Silo is a series of post-apocalyptic science fiction books by American writer Hugh Howey. The series started in 2011 with the short story "Wool", which was later published together with four sequel novellas as a novel with the same name. Along with Wool, the series consists of Shift, Dust, three short stories and Wool: The Graphic Novel.
Howey first began the series in 2011, initially writing Wool as a stand-alone short story. He published the work through Amazon's Kindle Direct Publishing syste...
