Sully John (first appeared in Hearts in Atlantis)

Sully John is mentioned in the following books:

The Dark Tower VI: Song of Susannah (Jun 2004)

I wrote for awhile this morning on my Vietnam story, switching over from longhand to my Power-Book, so I guess I’m serious about it. I like the way Sully John reappeared. Question: Will Roland Des-chain and his friends ever meet Bobby Garfield’s pal, Ted Brautigan? And just who are those low men chasing the old Tedster, anyway?
- Coda: Pages From a Writer's Journal / July 6th, 1998