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*aka ‘IRT Division’*
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*the A Division is a ‘division’ of the ‘New York City Subway’, consisting of the lines operated with services designated by numbers (1, 2, 3, 4, 5, 6, 7) and the “42nd Street Shuttle”*
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(these lines and services were operated by the Interborough Rapid Transit Company before the ‘1940 city takeover’)
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(‘A Division cars’ are narrower, shorter, and lighter than those of the B Division, measuring 8.6 by 51 feet (2.6 by 15.5 m))
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*.
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