His most notable book is:
* "A Fortran IV Primer" (1966): This was a foundational text for the Fortran programming language, widely used in scientific computing.
He has also authored or co-authored several other books, including:
* "The Multics System: An Examination of Its Structure" (1972): This book provided an in-depth look at the Multics operating system, a groundbreaking project that influenced later operating systems.
* "Computer System Organization: The B5700/6700 Series" (1973): This book focused on the architecture of the Burroughs B5700/6700 series of computers.
While he may have other publications, these are some of his most well-known contributions to the field of computer science.