Sir Hilary Jenkinson and Theodore R. Schellenberg, the two leading archival theorists in the English-speaking world in the twentieth century, held strikingly different opinions on the subject of the appraisal of archival records. This paper examines their views on the nature of archival records, the reasons for their retention, and the role of the archivist in the appraisal process. It then traces the evolution of their ideas through the subsequent archival discourse on appraisal in order to identify their continued relevance and lasting contributions, particularly in light of the current debates surrounding the management of electronic records.