https://digitalarchive.tpl.ca/internal/media/dispatcher/2097301/fullDubbed 'unflappable mac' during his seven years as British prime minister, Sir Harold Macmillan showed how he earned his nickname last night by remaining imperturbable while all about him members of Canadian Publisher's Council sat shocked by heckler who interrupted speech introducing him to council's annual banquet1/17/1968TSPA_0064723F0Picture7683078327642