There's Lisp In Small Pieces by Christian Queinnec (https://www.amazon.co.uk/Lisp-Small-Pieces-Christian-Queinnec/dp/0521545668 https://www.amazon.co.uk/Lisp-Sm

There's Lisp In Small Pieces by Christian Queinnec (https://www.amazon.co.uk/Lisp-Small-Pieces-Christian-Queinnec/dp/0521545668 https://www.amazon.co.uk/Lisp-Small-Pieces-Christian-Queinne...), and if you want to look into CLOS in depth, there's The Art of the Metaobject Protocol by Kiczales, des Rivieres, and Bobrow (https://www.amazon.co.uk/Art-Metaobject-Protocol-MIT-Press/dp/0262610744/ https://www.amazon.co.uk/Art-Metaobject-Protocol-MIT-Press/d...). There's also a good older text, Anatomy of Lisp by John Allen (https://www.amazon.co.uk/Anatomy-LISP-McGraw-Hill-computer-science/dp/007001115X https://www.amazon.co.uk/Anatomy-LISP-McGraw-Hill-computer-s...).