Other
Other sources of information about the Fear Mythos and the Slender Man Mythos:
The Fear Mythos Wiki
The Fear Mythos Forum
The Fear Mythos TV Tropes Page
The Slender Nation
Encyclopedia Slenderia
The Slender Man Mythos TV Tropes Page
Other sources of creepypasta:
Creepypasta Wiki
Terror Tortellini
Ichor Falls
No Sleep
The SCP Foundation
The Fear Mythos Wiki
The Fear Mythos Forum
The Fear Mythos TV Tropes Page
The Slender Nation
Encyclopedia Slenderia
The Slender Man Mythos TV Tropes Page
Other sources of creepypasta:
Creepypasta Wiki
Terror Tortellini
Ichor Falls
No Sleep
The SCP Foundation