Wow, what a haul. You even scored a copy of the Dragon CD archive I see - that's worth quite a mint itself.
I'm curious what metal figures are in the basic D&D red box set. I don't think I've ever seen that set before. And the blue cases with the minis - do they have any pics or whatnot on them (hard to tell what they are from the pictures).
Let's see how good I am...
Those modules stacked one atop each other are:
T1 - Village of Hommlet
U1 - Sinister Secret of Saltmarsh
X9 - Savage Coast
X2 - Castle Amber
A1 - Slave Pits of the Undercity
L1 - Secret of Bone Hill (which is upside-down)
S2 - White Plume Mountain
I6 - Castle Ravenloft or DL1 - Dragons of Flame
and the bottom one is S1 - Tomb of Horrors