On my way home from a weekend trip to Washington, D.C., I passed a guy selling random goods — used books, used records, discarded knick-knacks — on the First Avenue sidewalk. I’m not talking about a flea market table, even; this stuff was literally spread out on the concrete. Among the items he had for sale was this beautiful 1974 NYC Transit Authority subway map, based on the original 1972 design by Vignelli Associates. He sold it to me for US$2, a real find! I’m totally elated to have a copy of this design classic.