Sadly, Dungeons and Dragons, in nearly all of it's various incarnations and derivatives, has a surfeit of dungeons but a definitive lack of dragons. Since it's both "dungeons" and "dragons," there should be an equal amount of both, or a better ratio.
So with that in mind, I've decided to increase the number of dragons out there for brave and cunning adventurers to kill. And, under the assumption that each dragon will lead to enough XP to raise the PCs in question to the next higher level, I've set up the dragons by level, from 1st to 10th, statted out in Swords and Wizardry White Box format.
I've also decided to steal some historical and fantasy dragon names for each of these dragons, match up the dragon with a lair (using a map from one of the other RPG bloggers out there) and a desolation, and a list of the minions the dragon lords over. Treasure, as always, is up to the GM, but should be appropriate for a adventure series where the focus is killing dragons.
I hope you enjoy the following dragons and good luck on killing them!