The article Oskar J. Rojewski, "Raising, Educating, and Portraying Heirs to the Danish Throne at the Court of Margaret of Austria", KNOW, 1-2, 8 (2024), pp. 131-159, draws on a series of letters exchanged between Isabella of Austria and her aunt, Margaret of Austria, dated between 1519 and 1526. These documents are preserved in the Rigsarkivet (National Archives) in Copenhagen, within collections related to early 16th-century Habsburg correspondence. Written in French, the letters offer insights into the upbringing and education of Isabella’s children, especially in the context of their connection to the Danish royal house. Several letters discuss pedagogical concerns, daily routines, and the political importance of portraiture commissioned by or sent to Margaret’s court. They also reveal the role of visual representation in shaping dynastic identity and values. The selected letters form the core documentary basis for the arguments presented in the article. Full archival references and transcriptions are provided in the PDF. It has been assembled and documented as part of the project funded through 2022/47/D/HS2/01798 - NCN, Poland (Narodowe Centrum Nauki).