Original D&D is now completely available in PDF. And, surprise surprise, one of the invisible ink adventures managed to make it to PDF. Plus two more Dragonlance adventures and a Forgotten Realms boxed set to round out the week.
AC3: 3-D Dragon Tiles Featuring the Kidnapping of Princess Arelina (BECMI)
AC8: 3-D Dragon Tiles Featuring the Revenge of Rusak (BECMI)
A Light in the Belfry (2E Ravenloft, does not include the audio elements)
Savage Baronies (2E Red Steel/Mystara, does not include the audio elements)