I've saved hundreds of postcards I've received over the years. This one, from 1981, might be not just a favorite but the favorite. I love the picture, I love the script, and the 36 words, combined with the photograph (both the work of Duane Michals), manage to equal say a 30-page short story -- the longing and melancholy of Thomas Mann's "Death in Venice" come to mind. And the sender of the postcard, a sweet friend of dear friends in Northampton ... well, I've not seen her since.
(While in Montreal one weekend there was a show of Duane Michals' photographs at the Museum of Contemporary Art -- proof that, now and again, luck is bound to come your way.)