A 17¾-by-23¾-inch folk art painting was the top seller at the Americana Week auctions in New York last month, outperforming masterpieces of Rhode Island and Connecticut 18th-century furniture.

“Penn’s Treaty,” a depiction by Edward Hicks (1780-1849) of the iconic American legend of William Penn’s treaty with Delaware tribal chiefs, sold at Christie’s for $2,546,500, more than quadrupling the low of its $600,000-$900,000 estimate.