Desperate request c compiler v 5.1

Just trying this as a long shot.

12 years ago I wrote an application for a scanner in MS C v 5.1. The
customer came back to me for an update which I have promised for the new
year.

I have all of the source code but need to reinstall the compiler. It came on
14 360k floppies and I only have 7 of them.

Does anybody know where I can get get hold of the rest in a hurry. ?

I would try another compiler but the app used some fairly specialised
libraries and runs on dos in the scanner.

Alan Hood