The files contain copies of Rowe's outgoing letters, typed by the Secretary for the Engineering Department.
The majority of letters relate to the soil mechanics course at the University of Manchester, including comments on the course content, equipment, applications and other administrative matters. There are also a few letters which contain references for former students. Other letters concern papers written by Rowe and papers for which he acted as a referee. There are also letters to fellow academics and practising civil engineers relating to the development of new theories and recent research in the field of soil mechanics, with some references to the projects for which Rowe was acting as a consultant.