John George Nicolay (February 26,1832--September 26,1901) was a German-born American biographer, secretary of US President Abraham Lincoln and member of the German branch of the Nicolay family.
John George Nicolay (February 26,1832--September 26,1901) was a German-born American who served as private secretary to US President Abraham Lincoln and later co-authored a biography of the 16th President. He was a member of the German branch of the Nicolay family.