It being the oldest of the stories, the digital version had not survived translation from format to format and repeated backups, so I ended up typing it all in again not really that long ago.

When I was helping NESFA Press to get Fredric Brown's short stories back in print, I did OCR on a couple of the old books. It worked pretty well, much better than I'd expected. The results had to be carefully copy-edited, of course, but it was still a lot faster than retyping the stories.