<P> The modern travel agency first appeared in the second half of the 19th century with its root in 1758 as establishment of Cox & Kings Ltd . In the year 1970 , Cox & Kings the longest established travel company centered its focus on its business of travel and tourism . Lately Thomas Cook also established a chain of agencies in the last quarter of the 19th century , in association with the Midland Railway . They not only sold their own tours to the public , but in addition , represented other tour companies . Other British pioneer travel agencies were Dean & Dawson , the Polytechnic Touring Association , and the Co-operative Wholesale Society . The oldest travel agency in the United States is Brownell Travel ; on 4 July 1887 , Walter T. Brownell led ten travelers on a European tour , setting sail from New York on the SS Devonia . </P>
when did the first travel information agency open
in the second half of the 19th century with its root in 1758 as establishment of Cox & Kings Ltd