The Appendici to the Leiden University Resolutions of Curators and Mayors form a rich collection of documents from different genres, including letters, statutes and testimonies. Spanning the period between the founding of Leiden University in 1575 until its temporary dissolution in 1811, these documents are well-suited for historical linguistic research of Dutch in general, and for those interested in the relationships between norm and language in particular, as the period covers a key period in the codification of Dutch (ca. 1550–1804). In this data paper, the author introduces and describes the Leiden University Resolutions Appendici Corpus (lurac), a single-domain (i.e., context of interaction), multi-genre diachronic corpus of 103,451 words, consisting of samples of the Appendici to the Leiden University Resolutions for ten time periods of 25 years between 1575 and 1811. Both raw data and metadata are available.