When we think about the visuals that represent America, we might picture the Statue of Liberty, Bald Eagles, the Great Seal ...

His tiny drawing “Flag” (1958), the smallest work in the show, consists of a flat, 3-by-4-inch American flag that could almost be mistaken for an abstract rectangle of ash gray.

Donald J. Trump’s campaign is billing it as a must-have fashion accessory for his supporters: an American flag lapel pin with the former president’s name scrawled in gold block letters across ...