Elias Howe, Jr. invented the sewing machine at 55 Cherry Street in The Port in 1846. Howe's was the first patented functional sewing machine. Isaac Singer, who made sewing machines commercially successful, was forced to pay patent royalties to Howe. The Port was the site of the first reciprocal telephone conversation, which took place between
Alexander Graham Bell and
Thomas A. Watson on October 9, 1876. Watson was at an office in The Port, and Bell was at an office on Cambridge Street in
Boston. A plaque commemorating this event is mounted at 710 Main Street near the Windsor Street intersection. The Port was the early hub of the candy industry in the United States, beginning with the first candy factory in Cambridge, started by Robert Douglass in 1826 on Windsor Street. Notable candy factories in The Port included
Cambridge Brands, makers of
Junior Mints, still in operation on Main Street; the Squirrel Brands company, makers of
Squirrel nut caramel (the inspiration for the band name
Squirrel Nut Zippers); and
Necco (New England Confectionery Company), whose factory located across Massachusetts Avenue from today's Port was the largest candy factory in the world. == Notable people and places ==