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Orc - Wikipedia
Orcs | The One Wiki to Rule Them All | Fandom
Orcs - Tolkien Gateway
Lord Of The Rings: Origin Of The Orcs Explained - Screen Rant
Orc | Middle-earth, Tolkien, Fantasy | Britannica
Tolkien's monsters - Wikipedia
Even Tolkien was never really sure where orcs came from - Polygon
Orcs/Origin - Tolkien Gateway
Orcs: Origin of a Species | WIRED
Orcs | Tolkien Wiki - The Tolkien Forum