Lulu Press, 2019 - 479 pages - 59 figures - 6" x 9" format - CC0 code This book delves straight into the internals of an interactive LISP system. The complete source code is presented and discussed in great detail. Emphasis is on compilation to abstract machine code, but lots of topics will be discussed at length, including: LISP data objects, syntax analysis, closure conversion, lambda lifting, o