I'm such a sucker for these things. Here's my list:
1. Gary Gygax, "Dungeon Module G3 Hall of the Fire Giant King" (Lake Geneva, WI, TSR Games: 1978)
2. Harold Johnson and Tom Moldvay, "Dungeon Module A2 Secret of the Slavers Stockade" (Lake Geneva, WI, TSR Hobbies, Inc.: 1981)
3. Tracy and...