A quantitative analysis of the data sources combined with the coded interviews will then provide data-driven insight into the development of digital scholarly editions since the 1970s. The analysis will in a first step focus on the amount of projects and their average duration over time to produce an overview of the field. In a second step, long-term cycles such as the adaptation of TEI-XML and open access standards will be analyzed. Preservation and availability of all editions listed in both data sources will show the loss rate affecting digital scholarly editions and lead back to a discussion of the current state and history of the field based on the work currently being undertaken within the C21 Editions project.