> it would be great to have a book that shows making a Lisp step-by-step Excellent point! Compiling Lambda Calculus is a bit like this. It starts with Lambda C

> it would be great to have a book that shows making a Lisp step-by-step Excellent point! Compiling Lambda Calculus is a bit like this. It starts with Lambda Calculus and then develops multiple implementations of increasing complexity. LISP from Nothing also does this, but it is about ancient LISP. I will definitely keep this in mind!