If negatives happen to be in envelopes with slides you could just take negs in and have digitalised! You may be able to with slides? I think Dad did that to allot of his. Dad always kept the negs sealed and put away out of light. I think he even used to say freezing the best ones presearved them best in airtight system. My wife would just through them out if I did that! I am no expert but I would think taken in and having digitalised might be worth it. Course, if you are enjoying yourself, what da hey!