I finished the Dark Tower series recently and I was very intrigued by its in-universe culture, it didn't resemble anything I've encountered before.
First of all it was the 'forgetting your father's face' part, something quite unique. I've never seen such an emphasis on the father, just on the parents as a whole or on the mother.
Then we have some aspects of the older language, clearly resembling medieval English, with archaic words like 'thy'. But then there were terms like ka-tet, ka, todash that looked more asian-arabic, or mia, which was supposed to mean 'mother', which again sounds to come from a latin language.
The references to the knights, King Arthur and Merlin are easier one, making it clearly that he was inspired by the fantastic medieval stories and the author himself admitted to have written the book to be as epic as Tolkien's Lord of the Rings, but most of the universe looks like a very unique amalgam of cultural themes.
I understand the 'amalgam' part, since Dark Tower was meant to combine almost everything Stephen King had written, but is there a list of major motifs, themes and culture that inspired King?