Question: When was the American comedian and vaudevillian died who introduced "Thanks for the Memory" (1938) in the film "The Big Broadcast of 1938"?

Context articles: The Big Broadcast
Thanks for the Memory (disambiguation)
Bob Hope
The Big Broadcast of 1938
The Big Broadcast of 1937
Leo Robin
The Big Broadcast of 1936
Shirley Ross
Ed Walker (radio personality)
Thanks for the Memory

The Big Broadcast is a 1932 American Pre-Code musical comedy film directed by Frank Tuttle and starring Bing Crosby, Stuart Erwin, and Leila Hyams.
 Based on the play "Wild Waves" by William Ford Manley, the film is about a radio-singer who becomes a popular hit with audiences, but takes a casual approach to his career.
 A casual affair leads to his dismissal, but his career is saved by the station manager who buys the station and gives him his job back.
 The film co-stars George Burns and Gracie Allen in supporting roles.
 "The Big Broadcast" was produced by Paramount Pictures and was the first in a series of four "Big Broadcast" movies.
"Thanks for the Memory" is a song released in 1938 for the film "The Big Broadcast of 1938".
Bob Hope, KBE, KC*SG, KSS (born Leslie Towns Hope; May 29, 1903 – July 27, 2003) was an American comedian, vaudevillian, actor, singer, dancer, athlete and author.
 With a career spanning nearly 80 years, Hope appeared in more than 70 short and feature films, including a series of "Road" movies.
 In addition to hosting the Academy Awards show nineteen times, more than any other host, he appeared in many stage productions and television roles, and was the author of 14 books.
 The song "Thanks for the Memory" is widely regarded as his signature tune.
The Big Broadcast of 1938 is a Paramount Pictures musical film featuring W.C. Fields and Bob Hope.
 Directed by Mitchell Leisen, the film is the last in a series of "Big Broadcast" movies that were variety show anthologies.
 This film featured the debut of Hope's signature song, "Thanks for the Memory" by Ralph Rainger.
The Big Broadcast of 1937 is a 1936 Paramount Pictures production directed by Mitchell Leisen, and is the third in the series of Big Broadcast movies.
 The musical comedy stars Jack Benny, George Burns, Gracie Allen, Bob Burns, Martha Raye, Shirley Ross, Ray Milland, Benny Fields, Frank Forest and the orchestra of Benny Goodman (featuring Gene Krupa).
 Uncredited roles include Jack Mulhall.
 The version shown in British cinemas also included clips featuring Richard Tauber and the Vienna Boys Choir, not in the original American version.
Leo Robin (April 6, 1900 – December 29, 1984) was an American composer, lyricist and songwriter.
 He is probably best known for collaborating with Ralph Rainger on the 1938 Oscar-winning song "Thanks for the Memory", sung by Bob Hope and Shirley Ross in the film "The Big Broadcast of 1938;" collaborating with Jule Styne to write the score for the Broadway Musical Gentlemen Prefer Blondes, which starred Carol Channing who introduced the iconic song “Diamonds are a Girl’s Best Friend,” a few years later, Marilyn Monroe would reprise the role in the 1953 movie version; and collaborating with Ralph Rainger to write the song "Easy Living" for the 1937 film of the same name.
The Big Broadcast of 1936 is a 1935 American comedy film directed by Norman Taurog, and is the second in the series of Big Broadcast movies.
Shirley Ross (January 7, 1913 – March 9, 1975) was an American actress and singer, notable for her duet with Bob Hope, "Thanks for the Memory" from "The Big Broadcast of 1938".
 She appeared in 25 feature films between 1933 and 1945, including singing earlier and wholly different lyrics for the Rodgers and Hart song in "Manhattan Melodrama" (1934) that later became "Blue Moon."
Ed Walker (April 23, 1932 – October 26, 2015) was a Washington, D.C., radio personality.
 He hosted a weekly four-hour Sunday night program, "The Big Broadcast", on WAMU-FM, featuring vintage radio programs from the 1930s to 1950s, such as "Gunsmoke", "The Jack Benny Show", "The Lone Ranger", "Fibber McGee and Molly", and "Superman".
 Walker began hosting "The Big Broadcast" in 1990 when his friend John Hickman discontinued hosting due to illness; the show, which started in 1964 as "Recollections", has been the longest running program on WAMU.
 The show ranks first in its timeslot, and its audience is "remarkably young for a public radio crowd."
"Thanks for the Memory" (1938) is a popular song, with music composed by Ralph Rainger and lyrics by Leo Robin.
 It was introduced in the 1938 film "The Big Broadcast of 1938" by Bob Hope and Shirley Ross, and recorded by Shep Fields and His Orchestra with vocals by Bob Goday.
 Dorothy Lamour's solo recording of the song was also popular, and has led to many mistakenly believing over the years that it was she, and Hope, who sang the tune in the film (in which Lamour also appeared).