I didn't know if you guys treat tv documentaries the same, but anyone know where I can get this old PBS series called Empires? I've found the Greek section ( The Greeks - Crucible of Civilization), but the others I can't really find

Anyone know where I can get this old PBS series called Empires? TV documentary style about ancient civilizations. I've found the Greek section ( The Greeks - Crucible of Civilization), but the others I can't really find