Hi Kent,

Negatives would be stored with prints. Slides are direct-positive images on film that skip negs entirely (they're what folks used to project in the Kodak Carousel). BTW, your dad was smart about preserving his negs. Mostly they get destroyed from careless storage.

And you're right--both can be scanned to digital files commercially. Consumer slide-neg scanners are an endangered species, for some odd reason. I have an old one but don't know if the software will even install on a Win7 PC.

Cheers,
_________________________
--Rick