This study explores knowledge bases as extension of reference services for distance learners. Through a survey and follow-up interviews with distance learning librarians, this paper discusses their interest in creating and maintaining a knowledge base as a resource for reference services to distance learners. It also investigates their perceptions about the feasibility and practicality of a reference knowledge base. Primary findings indicate that the majority of participants view a knowledge base as an extension of distance learning reference services positively but see issues related to workload and quality control, in particular, which might hinder the development and maintenance of this type of repository. (Contains 3 notes and 3 tables.)