Pioneering travel agent Thomas Cook in many ways created the modern travel industry. Navigating the labyrinth of competing private railway and ship companies, and negotiating in foreign currencies and languages was a daunting task that discouraged many travelers.
Cook's first innovation, featured in this poster, was the "circular ticket" which allowed travelers to book all legs of an ocean passage from any line on a single ticket from his company.
Cook, of course, had a wealth of experience that made this feasible, having led his first guided round-the-world tour in 1872-3 (just prior to publication of Jules Verne's Around the World in 80 Days.)
Cook also issued the first traveler's checks, enabling his "tourists" to draw funds from participating agents in the days before electronic banking. These innovations together revolutionized the world of travel, making the world smaller and easier to explore.