Do not work with historic tools, play with historic toys, etc. Historic collections are used only when that use is deemed essential to research or interpretation and after potential damage has been carefully considered. Do not allow smoking, food, or beverages where museum workers are handling collections. Do not keep collections in a gallery during exhibit construction. Do not decorate offices with collections.
Historic materials belong on exhibit or in safe storage.
Because thirteen is an unlucky number, add a fourteenth rule from which all the rest grow. Before handling any historic materials, pause and think .