Three times a year, more than 1,000 dealers converge on the Portland Expo Center, bringing such interesting vintage items as Victorian decor, doo-dads for your home, tin windup toys from the 1960s, fabulous furniture, original prints from the turn of the century, kitchenware, china, pottery, vintage clothing, books from your childhood and pretty much anything that isn't being made any longer. This is a great place to wear your best 1940s outfit or Victorian attire. The next opportunity is on Jul …