Answer:

WHOSWHO

AnswerCrossword Clue
WHOSWHOA-list
WHOSWHONotables list
WHOSWHOVIP list of a sort
WHOSWHODirectory of notables
WHOSWHOVIP directory
WHOSWHOList of leading lights
WHOSWHOList of notables
WHOSWHONotables
WHOSWHOPopular reference book.
WHOSWHOWell-known reference book.
WHOSWHOCollection of notables.
WHOSWHOUseful reference book.
WHOSWHOReference book
WHOSWHOElite
WHOSWHODirectory of a sort
WHOSWHO"... in America"
WHOSWHOReference shelf staple
WHOSWHOWhere to look someone up
WHOSWHOA list of the A-list
WHOSWHOGroup of notables
WHOSWHOElite group
WHOSWHOReference work on notable people published since 1899
WHOSWHOBlue book
WHOSWHOIt names names
WHOSWHOList of influential people
WHOSWHOV.I.P. list