Cheers to Mark for inviting me to contribute to this, despite (because of? Remember The Bay Of Pigs...) me being a kind of Hauntological-skeptic.
I chose this:
The Crying Boy, or one of it's forms.
A little obvious perhaps but it strikes me that this was haunted way before the ridiculous It Actually Is Haunted! simmerings that surfaced later.
The fact that The Crying (Gypsy has been worked out of the reckoning, interesting in itself perhaps) Boy no longer even references a single picture (or artist) is a study in cryptoamnesia; the source long forgotten, the residue continues, a slug trail...