LISP 1.0
LISP 1.0 was the first version of Lisp, the earliest in the family of Lisp dialects. A few short years after its definition, it gave rise to Lisp 1.5. The manual for Lisp 1.0 was released in early 1960 and is available from the Software Preservation Group's site: LISP I PROGRAMMER'S MANUAL.