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 high regard. Tormé credited Miller with giving him helpful advice when he first started his singing and song-writing career in the 1940s. Mel Tormé met Glenn Miller in 1942, the meeting facilitated by Tormé's father and Ben Pollack. Tormé and Miller discussed "That Old Black Magic", which was just emerging as a new song by Johnny Mercer and Harold Arlen. Miller told Tormé to pick up every song by Mercer and study it and to become a voracious reader of anything he could find, because "all good lyric writers are great readers." In an interview with George T. Simon in