The name X dates to Y's childhood. As a child, Y was a reader of the magazine Youth's Companion. The magazine, best known for producing the original Pledge of Allegiance in 1891, was published in Boston, Massachusetts, by X & Co . When Y created X, he borrowed the name of the company that published his favorite childhood magazine. There have been several movies and radio shows based on X, the most famous adaptation being a CBS TV series which ran from 1957 to 1966, with Raymond Burr in the title role. William Hanna and Joseph Barbera, fans of X, parodied the character in episodes of The Flintstones and The Jetsons. Identify X.