Fiction:
* The Silk Road by David Kidd (Historical Fiction, Adventure)
* The Silk Code by Kate Quinn (Historical Fiction, Espionage)
* The Silk Wife by Attica Locke (Thriller, Mystery)
* Silk by Alessandro Baricco (Romance, Historical Fiction)
* The Silk Merchant's Daughter by Sarah Penner (Historical Fiction)
* Silk and Smoke by Tessa Dare (Historical Romance)
* Silk and Shadows by Laura Thalassa (Paranormal Romance)
* The Silk Men by John Burdett (Mystery, Thriller)
* Silk and Steel by Laura Joh Rowland (Historical Mystery)
Non-Fiction:
* Silk: The Story of a Fabric by Carolyn G. Ashbaugh (History, Fashion)
* Silk: The Royal Fabric of the Taj Mahal by Rajeev Sethi (History, Art)
* Silk: A History of the World Through the Fabric by William Dalrymple (History)
* The Silk Road: A History by Anthony Christie (History)
Children's Literature:
* Silk by Brenda Parkes (Picture Book)
* The Silkworms by Annemarie van Haeringen (Picture Book)
* The Silk Road by Sarah Lean (Children's Non-Fiction)
This is not an exhaustive list, and there are many other books with "silk" in the title. The exact list will depend on your specific interests and what you are looking for.