Digital editions are positioned between drawing from archived material, and being an archive themselves (Dillen 2019, 266). In addition to that, digital editions also are web resources in need of archiving, lest they fall subject to link rot and very soon disappear from the web either for the lack of a persistent identifier or lack of maintenance. For digital editions past and present, two main data sources are available. Patrick Sahle lists around 700 editions in a curated catalog (Sahle, n.d.), while the Catalogue of Digital Editions features about 320 digital editions in a database (Franzini 2012). Both sources have different criteria for inclusion, overlap in content and differ in granularity, yet these are the sources from which a history of digital scholarly editions will mostly draw. Analysis of these sources will present them in their scope, aim and usability for research, while highlighting underrepresented areas of data collection on digital scholarly editions.