The Prints & Photographs Reading Room is the access point to many of the Library’s visual collections. Some collections are online and others await your in-person visit. Unique in their scope and richness, the picture collections number more than 17 million images. These include photographs, historical prints, posters, cartoons, documentary drawings, fine prints, and architectural and engineering designs. While international in scope, the collections are particularly strong in materials documenting the history of the United States and the lives, interests, and achievements of the American people.