The Dark Tower II: The Drawing of the Three (May 1987)

The story is a continuation of The Gunslinger and follows Roland of Gilead and his quest towards the Dark Tower.

The Dark Tower II: The Drawing of the Three has connections to the following books:

The Prisoner / Chapter 4: The Tower : Richie "The Hammer" Ginelli

Rico Balazar is involved with a thug named Ginelli.

Ginelli. There was only one Ginelli Eddie knew; he ran a restaurant called Four Fathers. The pizza business was a sideline, a guaranteed stiff, an accountant’s angel. Ginelli and Balazar. They went together like hot dogs and mustard.

The Pusher / Chapter 3: Roland Takes his Medicine : Dennis and Thomas

One of these men had been a creature the gunslinger believed to be a demon himself, a creature that pretended to be a man and called itself Flagg. He had seen him only briefly, and that had been near the end, as chaos and the final crash approached his land. Hot on his heels had come two young men who looked desperate and yet grim, men named Dennis and Thomas. These three had crossed only a tiny part of what had been a confused and confusing time in the gunslinger’s life, but he would never forget seeing Flagg change a man who had irritated him into a howling dog.

References will be here!