This accession consists of biographical information, certificates and diplomas, correspondence relating to Dr. Welsh’s employment as Chairman of the Department of Physics, with officials of the Order of Canada, his retirement, the H.L. Welsh Lectureship, and other honors. The collection also includes notes and outlines from four interviews done for the U of T Oral History Programme. The collection includes four photographs, several degrees, awards, certificates, and posters. This collection has been divided into three series based on the form and content of the records; 1) Correspondence and Biographical Material, 2) Degrees, Awards, and Certificates, and 3) Photographs.