“We strive to tell the complete story of America,” Jarvis said in a statement on the park’s mission. He noted that the killing of nine black parishioners at Emanuel AME Church in Charleston, S.C., last week had sparked a national discussion about historic symbols and relics such as the Confederate flag.

“As that discussion spread across the country,” he said, “one of our largest cooperating associations, Eastern National, began to voluntarily remove from the park stores that it manages any items that depict a Confederate flag as its primary feature. I’ve asked other cooperating associations, partners and concession providers to withdraw from sale items that solely depict a Confederate flag.”