JOAN NABSETH STEVENSON. Deliverance from the Little Big Horn: Doctor Henry Porter and Custer’s Seventh Cavalry. University of Oklahoma Press. Hardcover, $24.95, www.oupress.com.
One of the best books about “Custer’s Last Stand” to come out in years, Deliverance from the Little Big Horn details the heroism of a noncombatant: 28-year-old Henry Porter, a contract surgeon who saved several lives after the battle on Major Marcus Reno’s hilltop defensive position.