Question: In what year did the 19th Emmy Awards host begin appearing on television?

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25th Primetime Emmy Awards: The 25th Emmy Awards, later known as the 25th Primetime Emmy Awards, were handed out on May 20, 1973.  The ceremony was hosted by Johnny Carson.  This would be the final ceremony that included daytime categories, as the Daytime Emmy Awards premiered the next year.  Winners are listed in bold and series' networks are in parentheses.

13th Primetime Emmy Awards: The 13th Emmy Awards, later referred to as the 13th Primetime Emmy Awards, were held on May 16, 1961, to honor the best in television of the year.  It was hosted by Dick Powell.  All nominations are listed, with winners in bold and series' networks are in parentheses.

27th Primetime Emmy Awards: The 27th Emmy Awards, later known as the 27th Primetime Emmy Awards, were handed out on May 19, 1975.  There was no host this year.  Winners are listed in bold and series' networks are in parentheses.

5th Primetime Emmy Awards: The 5th Emmy Awards, retroactively known as the 5th Primetime Emmy Awards after the debut of the Daytime Emmy Awards, were presented at the Hotel Statler in Los Angeles, California on February 5, 1953.  The ceremonies were hosted by Art Linkletter.

14th Primetime Emmy Awards: The 14th Emmy Awards, later referred to as the 14th Primetime Emmy Awards, were held on May 22, 1962, to honor the best in television of the year.  It was hosted by Bob Newhart.  All nominations are listed, with winners in bold and series' networks are in parentheses.

4th Primetime Emmy Awards: The 4th Emmy Awards, retroactively known as the 4th Primetime Emmy Awards after the debut of the Daytime Emmy Awards, were presented at the Cocoanut Grove in Los Angeles, California on February 18, 1952.  The ceremonies were hosted by Lucille Ball and Desi Arnaz.

7th Primetime Emmy Awards: The 7th Emmy Awards, later referred to as the 7th Primetime Emmy Awards, were held on March 7, 1955, to honor the best in television of the year.  The ceremony was held at the "Moulin Rouge Nightclub" in Hollywood, California.  The ceremony, hosted by Steve Allen and broadcast on NBC, was the first Emmy Awards ceremony to be televised nationally.  All nominations are listed, with winners in bold and series' networks are in parentheses.

19th Primetime Emmy Awards: The 19th Emmy Awards, later known as the 19th Primetime Emmy Awards, were handed out on June 4, 1967, at the Century Plaza Hotel in Los Angeles, California.  The ceremony was hosted by Joey Bishop and Hugh Downs.  Winners are listed in bold and series' networks are in parentheses.

Joey Bishop: Joseph Abraham Gottlieb (February 3, 1918 – October 17, 2007), known professionally as Joey Bishop, was an American entertainer who appeared on television as early as 1948 and eventually starred in his own weekly comedy series playing a talk show host, then later hosted a late night talk show.  He later became a member of the "Rat Pack" with Frank Sinatra, Peter Lawford, Sammy Davis, Jr., and Dean Martin.

10th Primetime Emmy Awards: The 10th Emmy Awards, later referred to as the 10th Primetime Emmy Awards, were held on April 15, 1958, to honor the best in television of the year.  The ceremony was held at the Coconut Grove in Hollywood, California.  It was hosted by Danny Thomas.  All nominations are listed, with winners in bold and series' networks are in parentheses.

Supporting paragraphs: 19th Primetime Emmy Awards Joey Bishop
Answer: 1948