The "Commodore 64 Machine Code Master" by Lawrence, David is a valuable resource for those interested in programming the Commodore 64 computer. Published in 1983, this paperback book serves as a comprehensive library of machine code routines, allowing readers to delve into the inner workings of this classic system. With a focus on practical examples and code snippets, this book is a must-have for anyone looking to expand their knowledge and skills in programming the Commodore 64.