IEEE Bushy Tree

LISP 1.5 was the classic LISP, the most widely-used release, and the source for all the other LISP systems, either directly or through inspiration.[1][2]

ANSI Common Lisp Branch
Preceded by
LISP
LISP 1.5 Followed by
Stanford LISP
ANSI Common Lisp Branch
Preceded by
LISP
LISP 1.5 Followed by
MACLISP
ANSI Common Lisp Branch
Preceded by
LISP
LISP 1.5 Followed by
BBN LISP
UCBLogo Branch
Preceded by
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LISP 1.5 Followed by
Logo