http://home.flash.net/~brenfrow/dd1index.htm
They're intermixed with the 1e products, but it's usually pretty obvious from the scan of the cover whether it was for 1e or 2e.
The perception that TSR decreased module production during 2e's run is pretty wide-spread, but actually wrong. Through 1982, TSR did about a module every other month. From 1983 to 1999, TSR averaged over a module and a half per month. The only years they didn't put out 16 or more were 1988 (with 2e about to be introduced), 1997 (when TSR shut down and WotC took over) and 1999 (with 3e about to come out).
Two reasons people tend to think TSR stopped doing adventures during the 2e period: First, they were all campaign specific. If you weren't playing Ravenloft, for example, all those Ravenloft adventures never registered as an adventure for you. Second, TSR largely abandoned the classic 32-page gatefold format in favor of more elaborate packaging. Thus, a lot of people weren't seeing a product that looked like what they were conditioned to think modules looked like.
R.A.