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Wide Wide World was a 90-minute documentary series telecast live on NBC on Sunday afternoons at 4pm Eastern. Conceived by network head Pat Weaver and hosted by Dave Garroway, Wide Wide World was introduced on the Producers' Showcase series on June 27, 1955. The premiere episode, featuring entertainment from the US, Canada and Mexico, was the first international North American telecast in the history of the medium. It returned in the fall as a regular Sunday series, telecast from October 16, 1955 to June 8, 1958. The program was sponsored by General Motors and Barry Wood was the executive producer. In March 1956, Time magazine reported that it was the highest-rated daytime show on television.