I'm also searching for the following by King. Some may or may not be able to be found. If you can, please help out:

A Possible Fairy Tale
After the Play
Afterlife
Bad Little Kid (proper English translation of Sale Gosse)
Batman and Robin Have an Altercation
But Only Darkness Loves Me
Charlie
Chip Coombs
Codename: Mousetrap
Comb Dump
Finders Keepers
George D.X. McArdle
Ghost Brothers of Darkland County
Glutch
Happy Stamps
Hatchet Head
History Lesson
I Hate Mondays
I'm Falling
Land of 1,000,000 Years Ago
Loon Call
Memory
Mobius
Movie Show
Muffe
Mute
Nightmares in the Sky
On the Island
Pinfall
Revival
Secret Windows
Stephen King Goes to the Movies
Summer Thunder
Sword in the Darkness
That Bus is Another World
The 43rd Dream
The Aftermath
The Corner
The Dark Man: An Illustrated Poem
The Dimension Warp
The Doors
The Dune
The Evaluation
The Furnace
The General
The House on Value Street
The Little Green God of Agony
The Old Dude's Ticker
The Pit and the Pendulum
The Rock and Roll Dead Zone
The Shepherd and His Flock
The Star Invaders
Thirty-One of the Classics
Time in a Glass That Ran
Under the Weather
Welcome to Clearwater
Willa
Wimsey