Campus Mapping: so many data sources, competing services, and oh so many pieces of data to correct. We'll first look at common systems (Google MapMaker, OpenStreetMap, and HERE MapCreator) with which errors about your campus physical plant can be corrected - and then work through the process of building an interactive campus map using Leaflet.js, a few plugins, and a combination of those data sources (fairly) easily for your own campus. Workshop will require at least a working knowledge of JavaScript. SUNY-ESF has been exploring various means of using external map data to offer a strong campus map for several years, and rapid changes to the physical plant of their Syracuse campus have required learning how to get changes made to services like Google Maps so that campus visitors are well-directed to campus.