“To this day there is a noticeable reluctance on the part of native-born art lovers to admit that a quintessentially American composer like Aaron Copland might actually be great, or that a stage actor need not have an English accent to perform the plays of Shakespeare or Stoppard. Could it be that the reputation of John Marin, whose subject matter is as American as his briskly improvisational brushwork, suffers from our nagging sense of cultural inferiority?…”