6x7" handwritten letter on unlined stationery sheet bears personal letterhead of horror author Robert Bloch (1917-1994), best known for his 1959 novel Psycho, which in turn served as the basis of Alfred Hitchcock's famed 1960 horror film of the same name. Letter thanks recipient for their kind words and discusses talk show appearances as well as an upcoming documentary appearance. Letter is undated, written in red felt tip pen and has been signed at bottom. Sheet has a crease at lower left corner (not affecting any text or signature) w/two diagonal creases at bottom (that do cross text and inscription but not signature). Fine/VF overall. Comes w/JSA COA.