Slides featuring various images and diagrams used in a presentation titled, "Networking IBM personal computers at University of Waterloo," delivered by Paul Dirksen. Some slides are duplicated.

Three copies of an article titled, "Batch compilers for student programs on the PDP-11," by Donald Cowan, P.H. Dirksen, J.W. Graham, J.W. Welch, and T. Wilkinson. This article was published in the Proceedings of the Digital Equipment Computer Users Society, May 1976, pages 919-921.

Slides featuring photographs of unidentified individuals working with computer equipment that are likely reproduced from the Kitchener-Waterloo Record Photographic Negative Collection and the Graphic Services fonds. Includes a portrait of Paul Dirksen.

A manual titled, "File processing with COBOL/WATBOL: part 1, by Donald Cowan, R.H. Cooper, Paul H. Dirksen, and James Wesley Graham. According to the introduction "the purpose of this text was to introduce some of the most common file-processing techniques, and to illustrate their implementation using the COBOL language." The manual is printed in two parts. Part 1 introduces COBOL-oriented concepts and is one hundred and twenty-two pages.

A manual titled, "File processing with COBOL/WATBOL: part 2" by Donald Cowan, R.H. Cooper, Paul H. Dirksen, and James Wesley Graham. According to the introduction "the purpose of this text was to introduce some of the most common file-processing techniques, and to illustrate their implementation using the COBOL language." The manual is printed in two parts. Part 2 covers in detail the applications-oriented subjects such as sorting, file maintenance and report generation. Part 2 is one hundred and forty-two pages.

Slides featuring text and diagrams used during a presentation given by Paul Dirksen likely titled, "Networking IBM personal computers at University of Waterloo."

Copies of three manuscripts that were presented at the 9th Canadian DECUS Symposium in Toronto, Ontario in January 1976. Includes:

• 1. Cowan, D.D., P.H. Dirksen, J.W. Graham and J.W. Welch. Development of educational software using the DEC PDP-11. 17 pages.

• 2. Cowan, D.D., Jack Schueler and J.W. Welch. Debugging aids for the PDP-11. 5 pages.

Slides featuring photographs of computer equipment and the University of Waterloo campus including the art gallery, swimming pool, basketball court, and theatre. Also includes portraits of Paul Dirksen and duplicate lecture slides used during presentations.

Slides featuring images of text used during a presentation likely about the Waterloo Foundation for the Advancement of Computing (WATFAC).