I used to have the all-in-one version of the Temple of Elemental Evil modules (T1-T4). Might still have it in storage; I don't remember if I gave it away or not. I read through it, but I never used it in play.
However, the other day Wizards of the Coast started giving it away for free on DnDClassics.com, so I went ahead and snagged a copy. It's still free, until the 28th of this month.