In Steelton, Pennsylvania, a man reads the newspaper while waiting for the barbershop to open. This photo appeared in a March 1985 story that followed the winding path of the Susquehanna River, the largest river by length and volume in the eastern United States.
PHOTOGRAPH BY WILLIAM T. DOUTHITT, NAT GEO IMAGE COLLECTION
In this unpublished photo from 1969, President Lyndon B. Johnson, First Lady Lady Bird Johnson, and Vice President Spiro Agnew are among the hundreds of people watching the launch of Apollo 11 at Kennedy Space Center.
PHOTOGRAPH BY OTIS IMBODEN, NAT GEO IMAGE COLLECTION
Artist Georgia O'Keeffe sits next to her painting "Black Place III," a rendering of one of her favorite places of inspiration in New Mexico. The 1980 portrait by George F. Mobley was republished in the October 2013 issue, which celebrated 125 years of National Geographic photography.
In the village of Gunjalwadi, Maharashtra, India, a one-year-old girl gets weighed during a check-up. A watershed program in this village led to improved crops, nutrition, and prosperity.
PHOTOGRAPH BY LYNSEY ADDARIO, NAT GEO IMAGE COLLECTION
In Bali, Indonesia, women carry offerings of food on their heads as they march three miles to the sea. The picture appeared in a 40-page travelogue titled "Bali by the Back Roads" in the November 1969 issue.
PHOTOGRAPH BY DONNA K. & GILBERT M. GROSVENOR, NAT GEO IMAGE COLLECTION
The cover story of the June 2014 issue was "The Dogs of War," detailing combat canines and their handlers in the U.S. Armed Forces. In this photo, a Belgian Malinois named Dino and his handler practice how to carry a wounded dog.
PHOTOGRAPH BY ADAM FERGUSON, NAT GEO IMAGE COLLECTION
At the 2008 Iowa State Fair, 8,400 fairgoers made history when they participated in the first Corn Dog Chomp—setting the Guinness World Record for the most people simultaneously eating corn dogs.
PHOTOGRAPH BY JOEL SARTORE, NAT GEO IMAGE COLLECTION