Baedeker "baedekering" became an English-language term for the purpose of traveling in a country to write a travel guide or travelogue about it. Fritz Baedeker became the most successful travel guide publisher of all time and turned the publishing house into the most famous and reputable publisher of travel guides in the world. In 1909, Leipzig University conferred an honorary Ph.D. (a rare honour at the time) on him at its 500th anniversary convocation. This era in its history was brought to an end by the outbreak of World War I, after which the house of Baedeker went into decline, the
Karl Baedeker on the title pages in both languages, further increased its sales, as his brother Adolph, who had opened a bookshop of his own in Rotterdam that year, sold it in Holland and also managed its sales in England. However, very few copies of the first edition have survived, which has made it one of the rarest and most sought-after Baedeker publications of all time. The "Conversationsbuch für Reisende" ("The Traveller's Manual of Conversation"), in four languages (English, German, French and Italian) which appeared later was based on this manual and for a long time, the stereotype editions remained unrivalled in