If you've got these Horizon Magazine of the Arts issues, here's how to use and take care of them. First, when reading, handle them gently. They're old, so the pages might be a bit fragile. Open them slowly to avoid tearing. When not in use, store them in a dry and cool place. This will help prevent more water damage or mold growth. You can also use a bookend to keep the spines in shape. If you notice any loose pages, use some acid - free glue to reattach them carefully. And always wash your hands before handling the magazines to keep them clean.