Author, editor and speaker Clive Young will be at the Port Washington Library Monday, Jan. 13 at 7:30 p.m., to discuss the sci-fi phenomenon Doctor Who, which has run for 50 years on the BBC. Throughout the decades, the time-traveling Doctor has been portrayed by William Hartnell (1963-66), Patrick Troughton (1966-69), Jon Pertwee (1970-74), Tom Baker (1974-81), Peter Davison (1981-84), Colin Baker (1984-86), Sylvester McCoy (1987-89), Paul McGann (1996), Christopher Eccleston (2005), David Tennant (2006-10) and Matt Smith (2010-present). Clive Young is the author of Crank It Up: Live Sound Secrets of the Top Four Tour Managers and Homemade Hollywood: Fans Behind the Camera, and editor of Pro Sound News, Pro Audio Review and ProSoundNetwork.com.