At 05:36 PM 2/27/02 -0500, John Cowan wrote: >numbering houses (which seems to be 18th century)
I would have ventured that it is much older than that, dimly recalling some older maps from a small museum I once visited. There's a difference between house numbers and street addresses. House numbers, which number every house in a city or village starting at 1 are the older system and I have been in places where these house numbers have been maintained (although perhaps no longer used for postal delivery). A./

