Telephone exchanges - A Historical Site

Coverage Guide

This page is a guide to the coverage of the site. It is not intended to be a complete site map, but simply to serve as a place you can check to see if we have the area which you want to look up, and not waste your time looking for material which we do not have posted here.

Coverage is dependent on two factors: my interest in the area (which is why I began with New York and Philadelphia) and my ability to find and enter the data. (If I had all the time in the world, and could get out to the Library of Congress every day, this site would expand coverage much faster. But neither of those "if"s is true.) So I am really not in a position to take suggestions about areas to add to my coverage.

Not all the listings are anywhere near complete. The outer suburban lists for New York City (both northern and eastern) are extremely incomplete, for example.

Current areas covered:

  • Atlanta, Ga. (including some suburban exchanges)
  • Baltimore/Washington region (though coverage currently is restricted to the Washington, D. C. metropolitan area and the city of Baltimore)
  • Boston, Mass. region
  • Buffalo, N. Y. region
  • Charlotte, N. C.
  • Chicago, Ill.
  • Cleveland, Ohio region
  • Los Angeles, Calif. (metropolitan area, including dialable suburbs; see the discussion at that section)
  • Montreal, Que. (Canada)
  • New Orleans, La. (including some suburban exchanges)
  • New York City (metropolitan area, including both inner and outer suburbs; see the discussion at that section)
  • Philadelphia, Pa. (metropolitan area, including dialable suburbs; see the discussion at that section)
  • Pittsburgh, Pa. (metropolitan area, including dialable suburbs; see the discussion at that section)
  • The San Francisco, Calif. Bay Area
  • Seattle, Wash. (including some suburban exchanges)
  • Toronto, Ont. (Canada)

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    Last modified September 15, 2015



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