Tim H sez, "A recent and amazing donation to the PlaGMaDA.org [ed: Play Generated Map and Document Archive] project: A beautiful, hand-made homebrew addition to the classic TSR Against the Giants series."
I wish I had the modules and monster sheets I painstakingly made in my youth. I used to cram them into envelopes and mail them, full of hope, to Dragon magazine. I suppose it's possible that they're in a filing cabinet at Hasbro or whomever ended up owning TSR's materials.
(Thanks, Tim H!)