Keith Mardak, CEO of Hal Leonard Corp.
Content referencing Keith R. Mardak
One publication says yes. But most donors to his presidential campaign are secret.Jul 30th, 2015 by Bruce Murphy
The $1.6 million, Eschweiler-designed mansion is owned by Keith Mardek, owner of Hal Leonard Publishing, the world's leading sheet music publisher. Jun 3rd, 2015 by Michael Horne