A North American P-51D Mustang named “Danny Boy 2nd” came to an ignominious end at the Eighth Air Force base in Raydon, England, on Dec. 29, 1944.

A push to unionize coal mines turned violent in Ludlow, Colorado, in the early 20th century.

Before she was a first lady, the future Jacqueline Kennedy Onassis was an aspiring reporter and photographer.

The conflict’s outcome was not in doubt — but the cost of and paths to triumph were.

LIFE magazine photographer Larry Burrows captures a dark moment in the Vietnam War.

It was called the “last of the gunfighters.” But there was more to the Vought Crusader.

An innocent-looking portrait that helped fan the abolitionist cause.