From 1964 to 1969 Professor Randell worked for IBM at the T.J. Watson Research Center, Yorktown Heights, New York, and later in California, working on computer architectures, and on operating systems and system design methodology. Some items dating from after 1969 but relating to series begun while Professor Randell was at IBM have been included here.

Consists of papers relating to Professor Randell's professional and academic associations throughout his career.