Well, at least they got the city name right. When I was in Data Systems at Southern New England Telephone (also in New Haven), I got a look at a cleaned-up list of city names in the Customer Records and Billing master database. According to it, we had at least one customer in East Fartford (rather than East Hartford), which might've shown up in "F" rather than "H" in the example you gave...

Just thought you might want to know :-)