In twelve chapters, the exhibition tells the story of the "GOTHA", which developed from the widespread calendars of the early modern era and emerged in the mid-18th century during the Enlightenment. From the very beginning, the "GOTHA" was present on the European market as a German-French parallel edition – as the "Gothaischer Hofkalender" and as "Almanach de Gotha". Important Gotha printers and publishers had published the "GOTHA" in their programmes from 1763. In 1785, Johann Georg Justus Perthes took over the publishing and distribution of the "GOTHA" and thus founded the famous Justus Perthes Verlag Gotha. Its unique reputation, forever associated with the city of Gotha, was established by the "GOTHA" in the 19th century. It rose to become the most important standard genealogical work of the European nobility and an influential handbook of the states of the world.
The exhibition is a central contribution of the Gotha Research Library to the 1250th anniversary year of the City of Gotha. It is also the first exhibition ever to focus on the "GOTHA". The concept and content of the exhibition are based, among other things, on the latest research results of the three-year research programme funded by the German Research Foundation (DFG). "The Gotha – A study of the most important genealogical reference work in modern Europe" of the University of Hamburg, 2023–2026 (Professor Markus Friedrich/Hannah Boeddeker).
