According to the American Hotel and Lodging Association, Hilton became the world’s first hotel chain to offer direct-dial telephone service in 1957. This 1962 ad promotes everything the telephone service had to offer, while still raising awareness of the superior service travelers would receive during their stays at Hilton Hotels.

FUN FACT: Rumors of Hilton opening up a luxury hotel in space have been circulating since 1958. Barron Hilton, either as a progressive thinker or a smart PR guy, talked about putting a Hilton on the moon frequently, a fact that was loosely referenced in a 2009 episode of Mad Men. (Source: BBC)