Thomas Cook & Son, originally simply Thomas Cook, was a company founded by Thomas Cook, a cabinet-maker, in 1841 to carry temperance supporters by railway between the cities of Leicester, Nottingham, Derby and Birmingham. In 1851, Cook arranged transport to the Great Exhibition of 1851. He organised his first tours to Europe in 1855 and to the United States in 1866.

The European Rail Timetable, more commonly known by its former names, the Thomas Cook European Timetable, the Thomas Cook Continental Timetable or simply Cook's Timetable, is an international timetable of selected passenger rail schedules for every country in Europe, along with a small amount of such content from areas outside Europe. It also includes regularly scheduled passenger shipping services and a few coach services on routes where rail services are not operated. Except during World War II and a six-month period in 2013–14, it has been in continuous publication since 1873. Until 2013 it was published by Thomas Cook Publishing, in the United Kingdom, and since 1883 has been issued monthly. The longstanding inclusion of "Continental" in the title reflected the fact that coverage was, for many years, mostly limited to continental Europe. Information on rail services in Great Britain was limited to only about 30 pages until 1954 and then omitted entirely until 1970. June 2011 marked the 1500th edition.