The correspondence documents McKay's activities and interests as a member of the board of trustees during the years 1945 to 1958. In the general files, there are letters concerning athletics, the retirement of John Cunningham, locating a prayer room on the campus, honorary degree and trustee nominatins and fund-raising. There are separate folders for his work with the class of 1906 as class secretary and fund-raising, renovations to the President's House, and Kappa Sigma Fraternity.