Ken Howard, who starred in 1970s series "The White Shadow" and has led the Screen Actors Guild for years, died, Wednesday, at age 71. No cause of death was given.

In this Jan. 25, 2015 file photo, Screen Actors Guild President Ken Howard speaks at the 21st annual Screen Actors Guild Awards in Los Angeles.

(Photo by Vince Bucci/Invision/AP, File)