We have a few reels of black and white home movies shot in the 20s-40s that have not aged well. Can anyone suggest a place that can restore and scan these?
If the place you use does not do a restoration, see if they can give the files back to you as lightly compressed AVIs (such as DV avi or MJPEG avi). DVD is MPEG-2 and if you try to restore it then reburn to another DVD, you'll reduce the quality as MPEG-2 is a lossy compression method, just like JPEG is lossy.
It's done by YES-Video. Quality for DVD transfer is fairly decent, they do seem to attempt to color balance things, but do not offer a restoration service at least via costco.