The books used in these episodes are:

Episode 4:

• The Ancient Egyptian Pyramid Texts, tr. James P. Allen (read the introduction here)
• The Ancient Egyptian Pyramids Texts, tr. Raymond O. Faulkner
• Erik Hornung, Conceptions of God in Ancient Egypt: The One and the Many

Episode 5:

• Plutarch’s Isis & Osiris (electronic text of the 1936 Loeb Classical Library edition of Plutarch’s Moralia)
• Miriam Lichtheim, Ancient Egyptian Literature, vol. 2: The New Kingdom, for the “Great Hymn to Osiris”

Episode 6:

• Salima Ikram & Aidan Dodson, The Mummy in Ancient Egypt: Equipping the Dead for Eternity
• Douglas Brewer, Ancient Egypt: Foundations of a Civilization
• Richard Wilkinson, The Complete Gods and Goddesses of Ancient Egypt 
• Miriam Lichtheim, Ancient Egyptian Literature, vol. 2: The New Kingdom
• Erik Hornung, Conceptions of God in Ancient Egypt: The One & the Many

Episode 7:

• Landmark Herodotus
• Essays in The Oxford Encyclopedia of Ancient Egypt (“Mythological Texts,” “Mythology”)
• The grumpy Egypt-hater’s remarks can be found in the introduction to his volume in the Mythology of All Races.