At long last, my Tome of Adventure Design (originally the Adventure Design Deskbooks) is up and ready for sale at Frog God Games. It's a quarter century worth of tables and a couple of places where I fleshed out some "Notes to Self" that were in the 3-ring binders along with the tables. People who have seen Deskbooks 1 and 2 know how it's presented -- the Tome of Adventure Design (ToAD) contains books 3 and 4 as well. The tables are what I think of as "deep design" rather than being short and weighted toward normal results as you have to do in a book of tables designed for rapid use during an adventure. This book is for when you're working ahead of time. There are a couple of exceptions - the first internal "book" can be used to generate the general concept of an adventure pretty quickly, either based on location, mission, or a villain's objective.
It's system neutral (for the D&D family, anyway, some of it uses concepts that were abandoned in 4e). So it's totally usable with AD&D, OSRIC, Original D&D, 2e, all the retro-clones, etc., etc.
The pdf is available immediately, and if you are pre-ordering the book you get the pdf right away.
It's 300 pages of tables and 7 pages of index (I worked hard to get a really good index).