Soldiers of Fortune: Mercenaries and Military Adventurers, 1960-2020 by Anthony Rogers

Solo Leveling, Vol. 1 (manga) by Chugong

Solo Leveling, Vol. 3 (Manga) by Chugong

Solo: Can a dog called Solo be part of the pack? by Adam Beer

Solomon Crocodile

Solutions and Other Problems by Allie Brosh

Solve Your Own Mystery: The Missing Magic by Gareth P. Jones

Solve Your Own Mystery: The Monster Maker by Gareth P. Jones

Solve Your Own Mystery: The Transylvanian Express by Gareth P. Jones

Some Assembly Required: Decoding Four Billion Years of Life, from Ancient Fossils to DNA by Neil Shubin

Somebody Loves You by Mona Arshi

Someday Angeline

Someday, Maybe by Onyi Nwabineli

Someone Perfect by Mary Balogh

Someone to Romance by Mary Balogh

Something Certain, Maybe by Sara Barnard

Something Else by Kathryn Cave

Something I Said by Ben Bailey Smith

Something Under The Bed Is Drooling : Calvin & Hobbes Series: Book Two by Bill Watterson

Something Wilder by Christina Lauren

Sometimes Babies . . . by Charlotte Trounce

Son

Son of the Circus - A Victorian Story