North American Numbering Plan usually shown in capital letters, were dialed. Later, the third letter, where implemented, was replaced by a digit, or an extra digit was added. This generally happened after World War II, although New York City converted in 1930. The adoption of seven-digit local numbers (2L-5N) was chosen as the requirement for direct distance dialing and progressively deployed starting the late 1940s. The famous Glenn Miller tune "PEnnsylvania 6-5000" refers to telephone number PE6-5000, a number still in service at the Hotel Pennsylvania (212 736-5000) in New York. Similarly, the classic film "BUtterfield 8" is set in the East Side of
Glenn Miller Orchestra top items in his library." In just four years, Glenn Miller and His Orchestra accumulated 17 number-one singles and 59 Top Ten hits. His number-one hits stayed at the top of either "Your Hit Parade" or "Billboard" charts for 73 weeks. In a period of only 203 weeks of recording, Miller and His Orchestra's songs spent 442 weeks, the equivalent of eight and half years, in the Top Ten, 189 of which are from multiple consecutive streaks, the largest being two totalling above 70 weeks. Miller also has the distinction of having three posthumous "Billboard" number-one albums: A self-titled compilation