LetterSampo: CKCC Knowledge Graph includes separated in different subgraphs representing actors, letters, places, and other aspects and documentation of epistolary data. The data covers approx. 20 000 letters by 2 000 senders and receivers. CKCC is an acronym for 'Circulation of Knowledge: A Web-based Humanities’ Collaboratory on Correspondences and Learned Practices in the 17th-century Dutch Republic'). The data publication is available at https://www.ldf.fi/dataset/ckcc and source information at http://ckcc.huygens.knaw.nl/

2021