FIGURE 1. Storage of slide collections at the Museum für Naturkunde Berlin (A–E) and National Museum of Natural History, Washington, D.C. (F–I). A–D. Wooden cabinets with drawers and cardboard trays for horizontal storage. Note replacement label for slide on loan (D) and slide mounts of Aphidina between two coverslips previously stored with insect on needle (E, arrows mark holes from needle in cardboard envelopes). F–I. Metal cabinets composed of several units by Technicon (F–H) and Fisherbrand™ (I). G. Metal tray with holes (arrows) for easy access to standard slides from below. Arrowheads mark bentup slide holders. H. Frontal view of opened single unit. I. Dense vertical storage of slides of similar size. Photographs F–I courtesy of Cheryl Bright. D–F: macro lens.