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 Karl Baedeker II worked with his younger brother Fritz, who joined the firm in 1869 as a partner and became the general manager. In 1877 (according to the source cited here) Karl, afflicted with an incurable mental condition, moved to a sanatorium near Esslingen am Neckar where he remained for the rest of his life. 1869−1925: Under Fritz Baedeker (1844−1925) the company grew rapidly. In 1870, the Baedeker bookselling business was sold. In 1872, he moved the company's headquarters from Koblenz to Leipzig, a major move forward, as most of the reputable major German publishing houses were located there. He