Rowan & Martin's Laugh-In producer mollified him, but had announcer Gary Owens read Johnson's credit as a separate sentence: "Starring Dan Rowan and Dick Martin! And Arte Johnson! With Ruth Buzzi ..." This maneuver gave Johnson star billing, but made it sound like he was still part of the ensemble cast. Johnson left the show after the 1970–71 season. Henry Gibson also departed after the 1970–71 season. Johnson and he were replaced by former "Hogan's Heroes" stars Richard Dawson and Larry Hovis, both of whom had appeared occasionally in the first season. However, the loss of Johnson's many popular characters caused ratings to drop
S. I. Martin the novel. The sequel, "Jupiter Amidships", was published in 2009 and follows Jupiter and his brother who are trapped by a pressgang before boarding their home ship to Sierra Leone. Aside from authorship, Martin actively promotes the knowledge of Black British history through his work with London schools, English Heritage, borough councils, the National Maritime Museum, the Museum of London, the Museum of London Docklands, the Imperial War Museum, the Public Record Office and the Black Cultural Archives. Martin lives and works in South London. S. I. Martin S. I. Martin (born 24 April 1961) is a British author, historian,