The "Elements pulled from The Dark Tower material" thread [Spoilers].
It has often been repeated that this first film will "start in the middle", but no one (or no one that I know of) is fully aware of just what that means besides the appearance of characters from later novels.
So, the purpose of this thread is to note and gather all the elements which hail from specific novels or comics in an attempt to clarify just what/who is being utilized for the live-action adaptation. Start chiming in if you have something useful to share !
The Gunslinger -> Jake Chambers (his first appearance, after all). The Man in Black.
The Drawing of the Three -> New York City itself. The gunshop in NYC (named differently, but likely fulfills the same role).
The Waste Lands -> The House on Dutch Hill. Possibly Lud (I am iffy on this).
Wizard and Glass -> Susan Delgado.
Wolves of the Calla -> ???
Song of Susannah -> Sayre. Tirana. The Dixie Pig.
The Dark Tower -> Pimli.
Comics
* The Sorcerer -> Arra Champignon
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Roland himself does not count, as we are already aware he exists and because you cannot have a The Dark Tower film without him .
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It is a tale told by an idiot, full of sound and fury, signifying nothing .