Ahh thanks Metric! Even then with the page counts being 24-32 pages, until 1983 they didn't really exceed the page count we are getting now with two APs. So we are getting a little more content than was really generated in the hey day outside of Dragon Magazine. Wonder how many were for just ad&d though. So in first edition in the first three years we had very little, the MM was released first and 8 adventures for both lines, with an assumption of B/X being a transition product...ish. 79 was the PHB and three adventures, updating the classes from the white box and standardizing the ranger from Dragon, 80 the DMG. Then the gods book and Greyhawk, a book of magic items and in 84 things exploded, DL, Manual of the Planes, UA, the survival guides and OA. 6 years into the life cycle. Then FR and the second edition transition when they got supplement drunk.