The public library facility design literature identifies the importance of understanding user wayfinding behavior and designing around it, and this dissertation is a step toward answering that call. A single-method pilot study utilized unobtrusive observation to investigate library users' initial wayfinding behavior from the two entrances of a medium-sized public library, with the data analyzed and displayed using Geographic Information Systems (GIS) software (Mandel, 2010). The pilot study found certain routes to be more popular than others and suggested that such information could be gathered relatively easily and then used by the library to improve the library's wayfinding system and for marketing of library materials in high-traffic areas. However, the pilot study's largest limitation, namely the inability to ascertain any user opinions regarding their wayfinding in the library, indicated the need for a multi-method case study approach, replicating the original unobtrusive observation and adding document review of the Library's wayfinding tools such as maps and signage, intensive interviews with library users, and an expert review of findings with library staff and a library wayfinding and signage expert to gain a more comprehensive view of library user wayfinding behavior.