Baedeker to have three of his four sons − Hans, Ernst and Dietrich − beside him in the firm, as editors and writers. Karl Baedeker III, the fourth son, entered academia and rose to become a professor of physics at the University of Jena. He was killed in action at the Battle of Liège in August 1914. It was his son Karl Friedrich who revived Verlag Karl Baedeker after the Second World War. During his reign, which lasted over 50 years, Fritz produced 73 new "Baedekers", as they came to be known universally. The Baedeker travel guides became so popular that
Baedeker also persuaded Eduard Wagner, the Baedeker cartographer in Darmstadt, to move to Leipzig and establish a new company with Ernst Debes, a talented cartographer from "Justus Perthes" a leading cartography firm in Gotha. The new company was named "Wagner and Debes" with offices adjacent to the new Baedeker address. Herbert Warren Wind, the author of "The House of Baedeker" wrote: He added: Michael Wild, the Baedeker chronicler, refers to the Baedeker maps as "a feast for the eye." The expansion was fast and furious. New editions were now printed by several Leipzig printers, but the bulk of the revised editions