American actor and musician Bobby Troup composed the song "(Get Your Kicks on) Route 66", while traveling down the highway with his wife in 1941. This song was later covered by popular musician Nat King Cole who made it into a best selling record. US 66 travelers found useful advice through a guidebook, written by author Jack D. Rittenhouse, titled aptly, "A Guide Book to Highway 66". US 66 also became well known for the unusual advertisements placed along the highway by Burma-Shave, a popular shaving cream manufacturer of the time. The era between 1945 and 1956 is often considered the height of popularity of US 66 travel. The popularity of the highway led to the Columbia Broadcasting System (CBS), an American television broadcast network, to air a television show called "Route 66" in 1960.