A print made in 1890 commemorates the 1863 storming of Morris Island by the 54th Massachusetts Regiment, one of the first all-black units of the Union Army. The men lost that battle, but proved themselves as soldiers. Kurz & Allison/Library of Congress hide caption

itoggle caption Kurz & Allison/Library of Congress

Photographer Sally Mann and Larry Mann, in her home gallery in Lexington, Va., have been married for 40 years. Melissa Block/NPR hide caption

itoggle caption Melissa Block/NPR

A baby cheetah, a little over a month old, gets its daily weigh-in. Bilal Qureshi/NPR hide caption

itoggle caption Bilal Qureshi/NPR