you could have them laminated. Like those dry erase calenders.

Thanks, perhaps it would have been of importance to mention I have a couple hundred? Details...

google — scanning sleeves

I'd go along with photographing them although, if they are large prints, I can imagine some problems with this. If they are real old blueprints with white line on a blue background, a digital photo can easily be changed to give black on white.

I have copied old prints in the past just by placing the print between two sheets of drawing film.

I know the local city engineering office has created some standard size sleeves for copying and scanning old prints. They took two sheets of clear thin plastic (slightly larger than the print size) and taped them togethter at one end. They then place the print between the two sheets of plastic run it through, it works fine. Essentially a homemade version of what others have mentioned. Of course, this is difficult for the very long roll drawings, some are 12 - 15 feet long.

Don't they use UV when you scan them so many years ago. I would just redraw them on a CAD system or software for your PC.

The old dye-line print systems used UV lamps to expose the prints.

Giftmoose mentioned that he had a couple of hundred prints to copy, could take quite a while to redraw.

I'm liking the idea ... I've seen some of that type of software, need to look closer.Thanks .