I'm glad you want to preserve the photos from your parents. I want to comment on the preservation of the actual photographs. If it hasn't already been done, these should be identified, I think, on the back of the picture using an appropriate writing utensil behind a darker area of the image. I would also index the picture to where ever the picture was stored by negative or digitally. I know you probably can identify the people in the photographs you have, but years from now, it would be a big help to others viewing the pictures to know at whom they are looking. There are antique malls full of unidentified photographs or just as bad those unhelpfully labeled as "mother's sister's first husband' or some other vague useless identification. Imagine visiting a cemetery and seeing gravestones that read 'Man with hat in front of car" or 'Woman in front of Christmas Tree'. It is nice to be remembered whether on stone or on paper or pixel.