various
Primarchs: the Audiobooks Volume 1
Primarchs (series)
Roboute Guilliman. Leman Russ. Magnus the Red. These names, and fifteen others, stand as a legacy of honour, glory – and treachery. In this collection, you will return to the Great Crusade and see these heroes striving to build mankind's Imperium, before the Horus Heresy threatened to tear it all down.
The Horus Heresy
collection

It contains:
Leman Russ: the Great Wolf
Magnus the Red: Master of Prospero
Roboute Guilliman: Lord of Ultramar