It mentions the title of his final (and undelivered) sermon:
On Thursday, April 4, 1968, Martin Luther King Jr. had retreated to room 306 of the Lorraine Motel, worrying about a sanitation strike in Memphis and working on his sermon for Sunday. Its title: "Why America May Go to Hell."This sermon title was for the sermon he would have preached if he had not been assassinated.
In case anyone is curious, the first ARPAnet network (the grandparent of the modern internet) didn't come online until November 1969.