Also integrated into the chronology are <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://edition-humboldt.de/chronologie/index.xql?jahr=1848&hofkalendarium=on&l=en">events at the Prussian court in which Alexander von Humboldt participated</ref> and which are recorded in the <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://actaborussica.bbaw.de/P0006298">court calendar</ref>, which is part of the publication "Practices of the Monarchy". For this purpose, the TEI-XML data of the Hofkalendarium are transferred to <hi xmlns="http://www.tei-c.org/ns/1.0" rendition="#i">edition humboldt digital</hi> and the personal mentions are mapped to the ehd register using the GND URIs (if available, otherwise they link to the register entries of <hi xmlns="http://www.tei-c.org/ns/1.0" rendition="#i">Praktiken der Monarchie</hi>).