M. Leslie Denning

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M. Leslie Denning

Hon. M. Leslie Denning
Born 1895
Died 1986
Nationality American
Home town Englewood, NJ
Known for 1st Direct Dial Phone call

Melvin Leslie Denning (1895–1986) was the Mayor of Englewood, New Jersey. On November 11, 1951, Denning became the first to use the direct distance dialing telephone facility in 1951 to contact Mayor Frank Osborne (California politician) of Alameda, California.[1][2]


  1. The mosquito crusades: a history of ... - Gordon M. Patterson - Google Books
  2. 1951: First Direct-Dial Transcontinental Telephone Call, AT&T. Accessed June 8, 2007. "Nov. 10, 1951: Mayor M. Leslie Downing [sic] of Englewood, N.J., picked up a telephone and dialed 10 digits. Eighteen seconds later, he reached Mayor Frank Osborne in Alameda, Calif. The mayors made history as they chatted in the first customer-dialed long-distance call, one that introduced area codes."