Saturday, August 27, 2016

Edward B. Robotti

A RAvenswood telephone exchange. Two-letter five-digit telephone exchanges were introduced in New York in 1930, (replacing the three letter, four-digit exchanges), and were changed to all numbers in 1960. But the older exchanges were not officially removed from the white pages of directories until 1978. The two-five format still lingers on older business signs around the city.

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