The first LISP compiler was implemented very early in the life of
the first LISP, LISP I for the IBM 704.
The LISP I Compiler
From the LISP I Programmer's Manual (March 1, 1960)
section 4.2, "Definitions of Functions in LISP"
In Chapter 2 functions are connected to their names only through the
use of the form LABEL. In the current LISP system, there ...