Knowledge Before Gettier

According to a historical claim oft-repeated by contemporary epistemologists, the traditional' conception of knowledge prevailed in Western philosophy prior to the publication in 1963 of Edmund's Gettier's famous three-page article Is Justified True Belief Knowledge?'. On this conception, knowledge consists of justified true belief. In this article, I critically consider evidence for and against this historical claim, and conclude with a puzzle concerning its widespread acceptance.