DOS 3.1 and 3.2.1 disks?

[Lyrical Nanoha <LyricalNanoha@dosius.net>]

I know there's images of DOS 3.2 and 3.3, I'd kind of like to experiment 
with the two lesser-known versions of DOS (3.1 and 3.2.1), does anyone 
have images of these?  Thanks in advance.

-uso.