Going by the timestamps on the map files:
- Sea of Flame (1.3H), Endless Deep (1.2H), Infernal Sky (1.2H), and The Kaizo Caverns (1.1H) were all released for Minecraft Beta 1.3
- The Black Desert (1.0H) was released for Beta 1.4
- Canopy Carnage (1.2H) was released for Beta 1.5
- Legendary (1.2) was released after Beta 1.7, but it was probably designed for Beta 1.6 (given Vechs's note in West Commons, as well as the fact that it doesn't have any pistons)
- Sea of Flame II (1.0), Infernal Sky II (1.0) and Sunburn Islands (1.1) all require Beta 1.7
With that in mind, many of those maps can be safely played in newer versions, but some of them made significant changes which could break or otherwise unbalance the maps:
- Beta 1.6 changed it so wooden pressure plates pop off of TNT, which will break some of the traps in Sea of Flame (e.g. under the first tree), The Kaizo Caverns (all over the place), and Canopy Carnage (a few spots along the east edge)
- Beta 1.7 changed it so punching TNT breaks it instead of igniting it, making it trivially easy to harvest TNT from traps that you weren't meant to be able to disarm (e.g. at the beginning of Black Desert). It also added "primed TNT", but I don't think Vechs started using that until much later.
It should be safe to play most of the early maps in Beta 1.5 just for the ability to shift-click items between inventories. Beware, though, that Beta 1.5 has a tendency to glitch you through the floor during save/load, so you might want to make a habit of pillaring up a block before quitting.