Does anyone know about when zip code came into affect? I have an old advertising thermometer I am going to put up for sale on Ebay and there is a address of 1600 genessee St. Kansas city 15, mo this way I can get a clue to how old it is any help would be greatly appreciated luvs
Luvs, Hey friend you have to use Google for these searches I as going to quess 1962 but it was actually 7/1/63 But what I didn't llook far enough was when you were required to put them on merchadise...perhaps merchants used up old stock
