In 1911, shortly before Piet Mondrian moved from Amsterdam to Paris, he had his horoscope chart drawn and interpreted by astrologer Adriaan van de Vijsel. Mondrian would carry the documents with him until his death in New York in 1944. The Netherlands Institute for Art History (RKD) in The Hague acquired the horoscope in 2012. Artist Willem de Rooij's personal interest in astrology inspired the idea to make Mondrian's horoscope and the associated readings accessible to a wider audience. This volume comprises its facsimile, transcription, and English translation, with a biographical sketch by Wietse Coppes and observations about the horoscope by Kocku von Stuckrad.