My first world was mostly generated in 1.3, "rails" was genrated mostly in 1.5, and "world" was generated in....1.8 or 1.0 and partially 1.5
So I just did a world tour video of my first world, and a very short tour of 2 others. I have other worlds but at one point or another most have already been made available for download. But I did a tour of these worlds because I was bored, and one of them is my FIRST minecraft world.
The world called "world" is from a multiplayer series Im doing on my YT channel which is why you wont be able to find a whole lot in the chests because the items are on the mutliplayer accounts