This paper traces the century-long history of a library that has served teacher preparation programs in Calgary, Alberta, since 1909. It looks at how this library's role and collections adapted to shifting notions of what constituted good teacher education and changing economic circumstances. In recounting this history, the paper examines the historical circumstances that created a separate education library at the University of Calgary and how issues of group and professional identity contributed to its continuing existence. The various themes which emerge may be common to many North American education libraries.