Findings:

• The Illuminatus! Trilogy
• Liveship Traders trilogy
• New Jersey Trilogy Boxed Set Box
• Bridge Trilogy
• An American Trilogy
• Empire of Dreams: The Story of the Star Wars Trilogy
• Black Jewels Trilogy
• The Steampunk Trilogy
• Sabriel Trilogy
• Border Trilogy
• Word and Void Trilogy
• The Secrets of the Back to the Future Trilogy
• trilogy (user)
• Samurai Trilogy
• Back to the Future Trilogy
• Parallels in the two Star Wars trilogies
• Sewer, Gas, & Electric: The Public Works Trilogy
• The Darksword Trilogy
• The Imperial Radch Trilogy
• The Hobbit Cinematic Trilogy
• illuminatus (user)
• The Red Queen's War Trilogy
• The Broken Empire Trilogy
• The Dark Star Trilogy
• The Hunger Games Trilogy
• The Cornetto Trilogy
• The Blademourner Trilogy - A Five Part Saga in Seven Acts.
• Schrödinger's Cat trilogy
• The Deptford Trilogy
• Indiana Jones Trilogy
• The Star Wars Trilogy
• The Harper Hall Trilogy
• The Tripods Trilogy
• Gormenghast Trilogy
• The Brentford Trilogy
• the Ants Trilogy
• trilogy
• New Jersey Trilogy
• The Illuminatus Chronicles
• Illuminatus
• Illuminatus! bands
• Illuminatus!
• Etienne Trilogy
• New York Trilogy
• The Godfather trilogy
• Gaean Trilogy
• The Christ Clone Trilogy
• Soul Blazer Trilogy
• Crumar Trilogy
• The Finder's Stone Trilogy
• Torch Song Trilogy
• The Alienation trilogy
• Ram Trilogy
• Dark Elf Trilogy
• The Godhead Trilogy
• Wurlitzer Trilogy
• Mars Trilogy
• The Armageddon Trilogy

If you Log in you could create a "illuminatus! trilogy" node. If you don't already have an account, you can register here.