The LISP 1.6 Programmer's Manual IS SAILON-28, LISP.WD[S,DOC]. VARIANTS OF LISP USING M-EXPRESSIONS CALLED RLISP BY TONY HEARN AND MLISP BY DAVE SMITH ARE ALSO AVAILABLE. A prospectus on the future glories of LISP 70 has been published by Horace Enea, Dave Smith, and Larry Tesler.