Mon-Fri, 9am-5pm, by appointment only; Sat-Sun, closed
4, 5, 6 at 59th St.; N, Q, R at Lexington Ave.-59th St.
Blau's rule of thumb: The more unusual, the better. In her collection of antique carpets, there isn't a single ordinary (or inexpensive) piece. Prices are $20,000 to $1 million.