If you can get his work into digital format, I suggest you try to get an archive at the internet archive, but copy right his work first. Also other online free digital libraries, but you'll need captions, facts to go with as many images as possible.
Even if it's only given a date, location, equipment type, etc, it's better to have some indication of what is the image.
Good luck.
I wonder how long that would tale to do with a lifetime of work. I'm guessing...way too long.