Does anyone know anything about how to preserve old sheet music?

I have inherited a box full of sheet music that was once my great-grandmother's. Got her name on it and everything. Dates on some of the pieces are 1905 and 1917, etc. So this is some really old stuff, and it hasn't been well taken care of--it's just been in a box for I don't know how many years.

I want to keep this music, so I need to do something about the shape it's in. I've got lots of ripped pages, cover pages detached, etc. Can anybody suggest something (other than a whole bunch of clear packing tape, which is all I can think of) to put this music back together & keep it that way?

So basically I'm talking antique paper preservation, I guess. Any suggestions on materials to use and how to use them would be much appreciated.

Thanks, :) Monica