Commemorative certificate presented to Herbert Ratz, an alumnus of the University of Toronto, for serving as a member of the engineering profession for twenty-five years. The certificate was presented by the Faculty of Applied Science and Engineering at the University of Toronto during the university's spring reunion in June 1975.

Application for sabbatical leave and supporting documentation including correspondence, publication lists and abstracts, an outline of a plan for sabbatical leave, notes and related material.

Application for sabbatical leave and supporting documentation including correspondence, publication lists and abstracts, an outline of a plan for sabbatical leave, notes and related material.

Program for the marriage ceremony of Janet Zurbrigg and Lawrence Parsons.