https://courses.cs.northwestern.edu/325/readings/graham/graham-notes.html

Notes on Graham's ANSI Common Lisp

General Comments

For the most part, Graham's Lisp code is maintainable and portable.
Function definitions are short and well-motivated. Exceptions are
noted below.

However, there are a few areas where Graham's coding style should not
be considered typical:

  * Naming: Like Unix, Graham likes short names, often to the point
    of crypticness. See my notes on naming for a better way.
  * Conditionals: Graham uses if rather than cond, even when using if
    leads to nested if's or embedded progn's.
  * Loops: Graham avoids loop, because it is so easily misused and
    different from the functional programming style. Sometimes,
    however, loop is the clearest simplest way to write something.
  * Preference for recursion over iteration, even if it might lead to
    code that causes stack overflows on very long lists.

Here are more detailed comments on particular chapters:

  * Chapter 2
  * Chapter 3
  * Chapter 4
  * Chapter 5
  * Chapter 6
  * Chapter 7
  * Chapter 8
  * Chapter 9
      + A data-driven ray tracer
      + An object-oriented ray tracer
  * Chapter 10
  * Chapter 11
  * Chapter 15
  * Chapter 16
  * Appendix A
  * Appendix D