Back when folks actually sent postcards, they sent ’em most often while traveling. Visiting France? Send the folks back home a postcard of a naked mademoiselle. Or maybe just the Eiffel Tower. Six or eight months later, after you’d been home for damn-near that long, the postcard would show up. Imagine everybody’s reaction if you’d actually died in the interim. Or worse. Talk about mirth! When traveling domestically, the same rules applied. Stop at a roadside attraction, send a postcard. We’re not sure if foreign visitors to the USA followed the same protocol by sending postcards back to Uncle Ndugu in suburban Brazzaville, but if they did, they would’ve looked something like the image on this collectible “Greetings from the USA” t-shirt.