Scan the photos, leave them in an archival box, fiddle with the electronic versions. You can have a book made with the photos arranged how you want them from the scans.
If you want the actual photos in an album, you could attach them with photo corners. Then there is no glue touching the pics. Then you can still take the photos out of the album to look at whatever might be written on the back and easily put the photos back in the album.
I have a whole pile of very old photos and documents for our family tree. I scan them and then put them in plastic sleeves in binders. I have the good quality plastic ones and they keep everything neat, protected and sorted.
The unsorted and not scanned ones are in archival boxes waiting for their turns. I only use printed copies from my digital images to give copies, show or even hang on the wall.
Princess, what a treasure you have received! I am currently putting together family pictures for my two nephews (mainly for their ladies who have requested them). Funny thing about that - my sister, their Mom, is a photographer