The New Jersey Historical Society has sold one of its prized possessions — an incredibly rare, hand-colored map of the United States from 1784 — because the Newark institution is hard up for cash. But in the museum world, some experts are calling the sale unethical because museums are not supposed to sell their treasures to raise money. The Abel Buell map, which brought in almost $2.1 million at the Christie’s auction, was described by a cartography expert as "one of the most coveted of all American maps." It is the first map of United State published in America, the...