John W. McCormack
John William McCormack was an American politician who served as the 45th Speaker of the United States House of Representatives from 1962 to 1971, representing Massachusetts as a Democrat from 1928 to 1971, their longest-serving congressman. Wikipedia*
On the C-SPAN Networks:
John W. McCormack has eight videos in the C-SPAN Video Library; the first appearance was a 1963 Compiled Program. The year with the highest average number of views per program was 1965 with an average of 886 views per program. Most appearances with Lyndon Baines Johnson (8), McGeorge Bundy (3), Mike Mansfield (3).