Alexander Graham Bell (b.1847 in Scotland, d.1922 in Baddeck, Nova Scotia) was an American inventor who is recognized as the inventor of the first practical telephone, much of the work for which was done in Brantford, Ontario. Bell was also a part of the Aerial Experiment Association with J.A.D. McCurdy, who made the first powered flight in Canada near Baddeck on 23 February 1909 in the Silver Dart. The Bell HD-4 hydrofoil set a speed record of 114 km/h on the Bras d'Or lakes near Baddeck in 1919, which stood for ten years. Bell is also remembered for his service to the hearing-impaired, as a professor at Boston University, and for his translation of the Mohawk language.
This citation is conjectural. It only seems likely that Metcalf dedicated this asteroid to Prof. Bell, and more evidence is requested.