Cold War tensions and the polio vaccine was the first polio vaccine to receive approval of the U.S. government, and was used until 1961 in America, when the Sabin vaccine was recommended to replace it. Albert Sabin, a virologist who publicly disagreed with Salk and his killed vaccine, worked on creating a vaccine with live, attenuated vaccines. Despite Cold War tensions, in January, 1956 Mikhail Chumakov, the director of Moscow's Polio Research Institute, his wife and colleague Marina Voroshilova, and Anatoli Smorodentsev, traveled to the U.S. in order to study the Salk vaccine and visited the laboratory of Albert Sabin. With the clearance of the FBI, Sabin
His Name Is Legs (Ladies and Gentlemen) and Me (Babe)", which closed former Beatle Ringo Starr's 1973 album "Ringo". In the lyrics to "His Name Is Legs", Harrison biographer Simon Leng recognises the same "nonsense word games" favoured by Monty Python. Leng comments that the latter's composition "The Lumberjack Song" particularly resonated with Harrison during this period, as he sought to challenge the public's perception of him as a Beatle, in the same way that Michael Palin's character in the Python song challenged the stereotypes associated with an "all-action" lumberjack. Harrison taped "His Name Is Legs (Ladies and Gentlemen)" during sessions for his 1974 album "Dark Horse",