See, here's the thing: Archives do not have pedestals - they use archival storage. This may come in different forms, but to the uninitiated eye, it often looks a lot like narrow pathways between storage shelves, with labeled cardboard boxes, which may contain, in acid-free paper, sometimes with foam inlays - objects.
Archives exist to preserve what is there, not to show it off. Sometimes, that's for future scientific research. And sometimes, they may participate in museal work as well, lending off objects.
