There are several sorts of printable fabric--some are fusible, some are not, and you can even make your own, by stiffening fabric with starch, though I've never done that--only seen directions for it.

The result is that just about any image that you can get on a computer or put into a scanner can be used to make a piece of fabric, though the size is limited by the size of your printer.

And yes--those images are favorites of mine as well! Especially the splendid pic of our lads the Travellers.