CBS Evening News a one-evening test broadcast on August 19, 1965, before permanently switching to the format on January 31, 1966. Cronkite's prime time special report, "Who, What, When, Where, Why", broadcast on February 27, 1968, ended with his declaration that the United States could only hope for a stalemate in Vietnam. It is often credited with influencing Lyndon Johnson's decision to drop out of the race for President. "If I've lost Walter Cronkite ... [I]'ve lost Middle America", he stated. Under Cronkite, the newscast began what would eventually become an 18-year period of dominating the ratings among the network evening news programs.
Walter Cronkite assignments. During this time he also covered the Nuremberg war crimes trial serving as the chief of the United Press bureau in Moscow. The main content of the papers documents Cronkite's career with CBS News between 1950 and 1981. The Cronkite Papers assemble a variety of interviews with U.S. presidents, including Herbert Hoover, Harry Truman, and Ronald Reagan. President Lyndon Johnson requested a special interview with Cronkite while he was broadcasting live on CBS. Between 1990 and 1993, Don Carleton, executive director for the Center for American History, assisted Cronkite as he compiled an oral history to write his autobiography,