Large research universities have incredible library collections, fostering research across many disciplines and spanning decades of collection development. The library catalog returns a wealth of information, but how physically discoverable are those items on library shelves? This poster looks at the prevalence of collection mapping, particularly shelf or range-level collection mapping, at R1 universities. It also serves as a way to highlight a case study of implementing such a system at my large university library, hopefully making the process easier for other libraries to implement at their own institutions.