I've been playing Dungeons & Dragons since the second edition, and my brother and I want to try to buy used second edition campaign box settings (Forgotten Realms, Dragonlance, etc...).
When I search (mostly on eBay), I find several campaign boxes of some of the campaign settings, all with different components inside.
For example, I know that for Greyhawk setting there is one book with a knight on the cover and another one with a flying griffin. I suppose they are different editions, but I am not sure.
Can someone explain to me what are the main campaigns of Advanced Dungeons & Dragons 2nd Edition? Ideally with visuals or references for identifying them visually?
A reliable reference where I can see actual photos of the products, with the components inside, would be great.
