> other interesting things on the map: the 5-digit telephone number. It's not 5 digits, it's 7: MAin 5-6200. The first two digits are 6 (M) and 2 (A): 625-6200

> other interesting things on the map: the 5-digit telephone number. It's not 5 digits, it's 7: MAin 5-6200. The first two digits are 6 (M) and 2 (A): 625-6200. Telephone exchanges used to be named, this particular one was called MAin. See also https://en.wikipedia.org/wiki/Telephone_exchange_names https://en.wikipedia.org/wiki/Telephone_exchange_names