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 as the music carried them back to years gone by." De Franco says, "the beauty of Glenn Miller's ballads [...] caused people to dance together." In 1942, at the peak of his civilian career, Miller decided to join the war effort, forsaking an income of $15,000 to $20,000 per week in civilian life, including a home in Tenafly, New Jersey. At 38, Miller was too old to be drafted and first volunteered for the Navy but was told that they did not need his services. Miller then wrote to Army Brigadier General Charles Young. He persuaded the United States Army