All of Edward Gorey’s work.
…and all of Gris Grimly’s stories.
Monster Mama- Liz Rosenberg and Stephen Gammell
The Melancholy Death of Oyster Boy and Other Stories- Tim Burton
Cinderella Skeleton- Rob D. San Souci and David Catrow
Mr. Punch- Neil Gaiman and Dave McKean
Signal to Noise- Neil Gaiman and Dave McKean
Violent Cases- Neil Gaiman and Dave McKean
Actually, check out anything by Neil Gaiman and Dave McKean
The Spider and the Fly- Mary Howitt and Tony DiTerlizzi
The Grey Lady and the Strawberry Snatcher- Molly Bang
The Bearskinner- Laura Amy Schiltz and Max Grafe
The Halloween Tree- Ray Bradbury and Joseph Mugnaini