File consists of material relating to the retirement dinner on February 7, 1975, given in honour of Harry D. Greb, Arthur C. Greb, Ross E. Hahn, and John D. Campbell. Includes correspondence and memoranda about the event, a guest list, the evening's agenda, a press release, press clippings, ephemera, ms. notes, and a photograph of Charles E. Greb seated at a table with John A. Pollock and others. Includes personal correspondence to Charles expressing best wishes to the retiring executives.