My city's downtown has a big old building that used to house all the AT&T stuff. When I first came to town, I got a job taking phone orders for a mail-order company that sells holiday gifts, food baskets and suchlike. Internet shopping didn't exist then, so from November through December they had rented out a couple of floors of the building to set up phones and old IBM terminals for the seasonal employees to enter in the nonstop phone orders.
Down on the first floor, near windows that looked out on the street, they used to have a sort of mini-museum display of old switchboards. And the other day I discovered that while whoever now owns the building has taken down the signs, the switchboards are still there.
(This is the best shot I could get at the time; I had to block the reflections with my body and a tote bag to see past the glass at all.)