To develop our workflows and pipelines, two corpora with very different requirements are currently in the process of onboarding. While UDraCor originates from a growing collection of heterogeneous sources, EPDraCor is based on semantically rich TEI files from the Early Print project. <ref xmlns="http://www.tei-c.org/ns/1.0" n="7" target="ftn7" /> The onboarding of EPDraCor starts with enhancing and correcting the original markup in our copy of the source corpus, accompanied by collecting LOD metadata from additional sources. Then, we combine the enhanced sources with their metadata and use XSLT to transform them, so that the TEI fulfills the requirements of the DraCor platform.