The Dewey Hotel Museum is rumored to be haunted by the spirit of the town's founder, Jacob Bartles, who once lived there. Paranormal encounters have reportedly been experienced by visitors and investigators on the second and third floors. A male presence is often reported in one of the upstairs bedrooms. Many believe this ghost is the spirit of Jacob Bartles, who built the hotel around 1899 for his family. In 2020, visitors on a special lantern-lit ghost tour reported significant spirit activity on the second and third floors. According to one reviewer, both EVP (Electronic Voice Phenomena) and EMF (Electromagnetic Field) readers "lit up like the Fourth of July" during the tour. The museum's paranormal intrigue is mentioned as part of its appeal, attracting both history enthusiasts and those interested in the supernatural.