Historical clue formulations

• ___ Whitehead, author of the 2017 Pulitzer-winning novel "The Underground Railroad" — 2019-02-27
• Chuck who was part of the Watergate Seven — 2017-12-14
• Chuck who advised Nixon — 2016-01-22
• Watergate scandal figure Chuck — 2001-07-23
• Chuck of Watergate fame — 1998-11-11