Two 1970's Jac-An Maxi dresses with detachable capes

Oh if clothing could talk! I would love to hear the adventures these two sister dresses went on. I am not sure what these two's history is but my best guess is that they are from the 1970's. given their presumed age they are in good condition. I would like to keep the two of them together if possible so the listing is for BOTH. I want to find them a good home that will respect their history. I could not find any sizes but Maddie's ( yes I named the mannequin) measurements are about 34 bust, 27 waist, and from shoulder to floor she is about 5 feet 1. They are a little loose on the mannequin (see pictures) but fit snugly on me and my 33-inch waist. Both have zippered backs and the peach one has a hook and eye at the waist. Both come with their own detachable capes.