On May 18th, I hosted a seminar about information history, a topic that seems to have gained momentum in recent years. My interest in information as a historical phenomenon began as an attempt to inquire into the prehistory of the Danish public libraries.1 For some years, I have also had a strong interest in the history of knowledge. Framing things this way might cause readers to think that I assume clear and evident differences between the two. I am, however, much more interested in how they supplement each other than in how I can characterize each as a unique field. It is no secret that the history of knowledge has gained quite a different resonance within history than information history has experienced.