This volume commences with the the books and manuscripts given at the foundation of King’s College in 1495, continues with the collections which accrued to Marischal College from its foundation in 1593, and comes together with the fusion of the two colleges in 1860 in the modern University of Aberdeen. From the beginning, the scope and focus of the University was international, and its developing collections represent a microcosm of the world of knowledge as it changed over the centuries. The University Colleges of Aberdeen have a distinct intellectual tradition: pragmatically tolerant in times of persecution; dissident from the religious and political policies of the Lowlands; looking outwards to the world of northern Europe and to the territories of the Jacobite diaspora. The book introduces one of the oldest continually-evolving academic library collections of the Anglophone world, surveys its history and includes a series of studies of items or collections of particular interest.