Here’s the NYT article. Go and see the exhibit if you can.
But “a pivotal time in America’s diplomatic past, a moment when the country was beginning to flex its imperialist muscles”? “Pivotal” I can understand, but hadn’t the U.S. mostly done its thing by then, with Spain, Mexico and the rest, including Hawaii? After that, I thought that it was mostly consolidation and defense, as the U.S. had now become a status quo power. Vaguely revisionist? It is the Arts & Design section.