How many horror-themed cartoon shorts are there?

[Guitarman]

As the titles of the post indicates, I am wondering how many horror-themed Disney cartoon shorts were made. Here is a list of the titles I am currently aware of:

Mickey Mouse:
The Haunted House
The Mad Doctor
The Gorilla Mystery
Lonesome Ghosts

Donald Duck:
Donald and the Gorilla
Duck Pimples
Donald’s Luck Day
Trick Or Treat

Pluto:
Pluto’s Judgement Day

Silly Symphonies:
The Skeleton Dance

Are there any others people might know of?

Thank you.

[Disney Duster]

Do you count Mickey Mouse in Runaway Brain?

[Guitarman]

I’m only interested in the cartoons made in the 20s-50s. But thanks for the suggestion.

[Disney Duster]

Oh, ok I gotcha. And you're welcome. I wish I knew more to suggest!