As requested, what shots I could find of the old shelving units
As the one that assembled those wood shelves after the move from the Bunker. Please do not re-assemble these. They are end of life. New shelving should be built where necessary. If you absolutely must have these shelves again, use new 2x4 for the vertical supports. There are just too many holes in these at this point to be competent.
you can even see in the photos the extreme bowing in the shelves. These have to be totally rebuilt if we need more shelving.