The Codex of the Infinite Planes is a massive book that even two strong men can barely lift (assuming their Strength to be 16, their combined maximum load is 460 lbs or 209 kg). This tome has the ability to open a portal to any plane in existence.
- David "Zeb" Cook. Book of Artifacts (TSR, 1993).
- David "Zeb" Cook. "Plane Truth Part III: The Transformation" Dragon #205 (TSR, 1994).
- Gary Gygax. Dungeon Master's Guide (TSR, 1979).
- Gary Gygax and Brian Blume. Eldritch Wizardry (TSR, 1976).
- Dale Henson and Doug Stewart, eds. Encyclopedia Magica Vol 2 (TSR, 1995).
- Dennis Tetreault. "The Codex of the Infinite Planes." Available online: 
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