Dedman, Stephen. "Amendment"
What if: Lee Harvey Oswald did not become "radicalized", and Charles Manson was never implicated in the Tate-LaBianca murders.
Summary: Working security at the 1980 World Science Fiction Convention, Lee is assigned to keep the "Preacher" away from Robert Heinlein.
Published: In Science Fiction Age, September 1998; and The Lady of Situations, Ticonderoga 1999 (0958685657).