https://en.wikipedia.org/wiki/Wayne_and_Shuster
episode aired on Dec. 12, 1975.
Wayne and Shuster were a Canadian comedy duo formed by Johnny Wayne and Frank Shuster. They were active professionally from the early 1940s until the late 1980s, first as a live act, then on radio, then as part of The Army Show that entertained troops in Europe during World War II, and then on both Canadian and American television.
Wayne (born Louis Weingarten; May 28, 1918 – July 18, 1990) and Shuster (September 5, 1916 – January 13, 2002) were well known in Canada, and were Ed Sullivan's most frequently recurring guests, appearing a record 67 times on his show.[1] Despite repeated suggestions that they should move to the United States to further their careers, the duo chose to stay in Canada.
episode aired on Dec. 12, 1975.