please don't piece them and hang them. the weight will cause drag and hurt the fabric.
since they have never been used they have excellent research value. discuss it with your children and they may feel that the best place for them is a museum that can take care of them properly (humidity and climate control, etc.) it would be a wonderful thing to allow everyone to see this piece of history.
even if they don't immediately display them, they will become part of a rotating display that you can be proud of donating.
please consider this.
p.s. i donated a crocheted bedspread (the most intricate one i ever saw) that was made by my husband's grandmother in about 1895 in europe, to a museum that was delighted to have it. when it is displayed (not always) a card is shown telling who donated it. my family feels very proud.