Not only are the Regulators another name that Ted uses for the Low-Men, I also believe that the "Sinister No-Face" from the Regualtors book is another apparition of the man in black,walter odim,marten broadcloak,randall flagg,ect...

In "The Waste Lands", Co-Op City is mentioned.  Co-Op City is the city where "The Running Man" is set.