Primary
Egyptian 
Belief system
The religion of ancient Egypt represents a cultural identity that lasted from ca. 3500 BCE to 300 CE, and included hundreds of myths, deities, and customs.
Belief systems cited
It looks like only the main belief system was referenced in this work.
Other works
The Assyrian Dictionary of the Oriental Institute of the University of Chicago (CAD) 
Multi-volume work · 1956
The Conquest of Civilization 
Book · 1926
The Conquest of Civilization is a 1926 book by James Henry Breasted. The book explained the course of human history while citing important milestones for the species of man.
A History of the Ancient Egyptians 
Book · 1908
A History of the Ancient Egyptians is a 1908 book by James Henry Breasted, an English explorer. The book is almost 500 pages long and was published in New York by Charles Scribner's Sons. Breasted details an overall history of the ancient Egyptian dynasties.
Contributor
James Henry Breasted was an American archaeologist, Egyptologist, and historian.
Charles Foster Kent was an American Old Testament scholar who taught at the University of Chicago.
Frank K. Sanders was an American scholar who studied at Yale University.
Bibliography
Black, Jeremy, and Anthony Green. Gods, Demons, and Symbols of Ancient Mesopotamia: An Illustrated Dictionary. Illustrations by Tessa Rickards. London, United Kingdom: The British Museum Press, 1992.
Cirlot Laporta, Juan Eduardo. A Dictionary of Symbols. Second Editions. Translated by Jack Sage. London, England: Routledge, 2001. [E-book edition by Taylor & Francis]
