This document discusses subject access for visual materials such as artwork, maps, and photographs. It notes that subject headings provide an important third discovery point for library users beyond keyword and field searching. However, applying subject headings to non-textual materials poses unique challenges. For artwork, interpretations can vary, and metadata standards like ARTstor allow for inconsistent subject descriptions. Maps also require careful assessment to determine if geographic labels constitute subject headings. The document examines these issues and debates around subject access for non-textual library materials.