Start with high-confidence fantasy books, then narrow by subgenre or adjacent topics.
The Wicked in Me
Suzanne Wright
The Strange Case of the Alchemist's Daughter
Theodora Goss
The Darkness That Comes Before
R. Scott Bakker
The Silver Skull
Mark Chadbourn
The Skin Map
Stephen Lawhead, Stephen R. Lawhead
The Swordbearer
Glen Cook
The Great War Syndicate
Frank R. Stockton
The Aeneid
Virgil
Alice's Adventures in Wonderland
Lewis Carroll
…and the Angel With Television Eyes
John Shirley
Beyond the Door
Philip K. Dick
Gold in the Sky
Alan E. Nourse
Dearest
H. Beam Piper
The Door Into Infinity
Edmond Hamilton
The Mississippi Saucer
Frank Belknap Long
Tiger Cat
David H. Keller
Venus Is a Man's World
William Tenn
CURIOUS CASE OF BENJAMIN BUTTON
F. Scott Fitzgerald
Harry Potter: an Official Hogwarts Coloring Book
Paula Rozelle Hanback