Two articles are featured. The first, by Wenwen Li, describes some of the mapping issues associated with a UC-Muliti-campus Research Program and Initiatives (MRPI) project about the metropolitan economy of the Los Angeles region. The second, by Andrea Nuernberger, focuses on knowledge assessment and spatial abilities of individuals with Alzheimer's disease, a project that she and Dan Montello inherited from the late Reginald Golledge, a pioneer in the study of human spatial behavior.