John Brown could be seen as a hero or a madman (perhaps both), but either way, there's no doubt he played a role in igniting the Civil War. Actor Joe Morton narrates a chronicle of Brown's life (1800-59), which features archival stills, atmospheric re-creations and the comments of historians. Interviewed: Russell Banks, Bruce Olds, Margaret Washington, Dennis Frye, Edward Renehan, James Horton, James Stewart, Paul Finkelman and Charles Joyner.

Recalls the construction of the 1500-mile "shortcut to Tokyo" through Canada in 1942 by 11,000 U.S. troops (4,000 of them black). It wasn't the Army's greatest World War II triumph, but it was one of the first, and it gave Americans, who feared a Japanese buildup in the Aleutians, a needed morale boost. This hour is light on military and engineering detail, and packed with proud GIs recalling mud, cold and toil.

"Race to the Moon" chronicles Apollo 8, the first voyage to the moon. "It was an event beyond all other events," says Walter Cronkite of the December 1968 mission, which laid the groundwork for the first lunar landing seven months later. Cronkite and author Andrew Chaikin put the flight into context; astronauts Frank Borman, Jim Lovell and Bill Anders and their wives recall it firsthand. Says Lovell of seeing the lunar landscape, "We were like three kids looking into a candy-store window."

A gripping study of the groundbreaking prosecution, which began Nov. 20, 1945, as Nazi Germany's leaders were held accountable for war crimes, infamously blamed on "following orders." Profiled are Hermann Goering, the lead defendant, and Robert Jackson, the U.S. prosecutor. Also: comments from Walter Cronkite, who covered the proceedings; events leading to the trial, which had 21 defendants and eight judges; footage of concentration camps.

The history of the Alaska Pipeline, which was built in the 1970s to transport oil across 800 miles of pristine wilderness, from Prudhoe Bay to Valdez. Included: the 1968 discovery of the largest oil field in North America at Prudhoe Bay; the battle between Native Americans and the government over the land the pipeline would cross; environmental concerns; and construction of the pipeline itself, which employed 78,000 people and cost more than $8 billion.

One of the first skirmishes of the Cold War, the 1948-49 Soviet blockade of rail and road traffic to and from West Berlin, is recalled. The U.S. and its allies responded with an airlift of food and supplies to residents. Included: archival footage; and comments from mission pilots and some of the civilians who received aid.

A marvel of engineering, architecture, and vision, the story of the Beaux Arts structure on 42nd Street that forever changed midtown Manhattan.

In 1897, renowned Arctic explorer Robert Peary returned to New York from his latest Greenland expedition. At the request of anthropologist Franz Boas, he brought with him five polar Inuits for study at the American Museum of Natural History. Within months, four of them had fallen sick and died, leaving a seven-year-old boy named Minik to fend for himself in a foreign land.