Clay Risen’s engaging “The Crowded Hour” tells the story of Teddy Roosevelt and his Rough Riders, while focusing on the Spanish-American War as the turning point in America’s role in the larger world.

The East Hampton Library’s Authors Night benefit will convene once again at 555 Montauk Highway in Amagansett, with cocktails and hors d’oeuvres, hobnobbing, and book signings starting at 5 p.m. on Saturday.