where Laurel first worked. His boyhood hero was Dan Leno, considered one of the greatest English music hall comedians. With a natural affinity for the theatre, Laurel gave his first professional performance on stage at the Panopticon in Glasgow at the age of sixteen, where he polished his skills at pantomime and music hall sketches. It was the music hall from where he drew his standard comic devices, including his bowler hat and nonsensical understatement. In 1912 Laurel worked together with Ted Desmond on tour in Netherlands and Belgium as a comedy double act known as the Barto Bros. Their act, which involved them dressing as Romans, finished when Laurel was offered a spot in an American touring troupe. After Laurel left England for America the pair maintained a life-long friendship, sending letters and photos that documented Laurel's rise from an unknown British comedy actor in 1913 to one of the biggest names in Hollywood in the 1950s. The correspondence, spanning around 50 years and including photos of them being reunited in the US, was put up for auction by Desmond's grandson, Geoffrey Nolan, in 2018. He joined Fred Karno's troupe of actors in 1910 with the stage name of "Stan Jefferson"; the troupe also included a young Charlie Chaplin. The music hall nurtured him, and he acted as Chaplin's understudy for some time. Karno was a pioneer of slapstick, and in his biography Laurel stated, "Fred Karno didn't teach Charlie [Chaplin] and me all we know about comedy. He just taught us most of it". Chaplin and Laurel arrived in the United States on the same ship from Britain with the Karno troupe and toured the country. During the First World War, Laurel registered for military service in America on 5 June 1917, as required under the Selective Service Act. He was not called up; his registration card states his status as resident alien and his deafness as exemptions. The Karno troupe broke up in the spring of 1914. Stan joined with two other former Karno performers, Edgar Hurley and his wife Ethel (known as "Wren") to form "The Three Comiques". On the advice of booking agent Gordon Bostock, they called themselves "the Keystone Trio". Stan started to do his character as an imitation of Charlie Chaplin, and the Hurleys began to do their parts as silent comedians Chester Conklin and Mabel Normand. They played successfully from February through