The Mega-Brands That Built America Season 3: Episode Guide & Ratings

The biggest names in computers go head-to-head in a race to create the first portable computers; through failures, alliances and the return of an American icon, they'll usher in their first ever handheld device.

Three American retail icons are born within months of each other in 1962, sparking a rivalry for the ages.

An ambitious upstart leaves Wall Street to start an internet store that becomes a global empire, while a young computer programmer revolutionizes the way we buy and sell online--creating rival multibillion-dollar brands that become household names.

Family-owned hardware stores become behemoth brands who battle it out taking big risks, ushering in new innovations, and betting it all in a race to become the number one hardware store chain in America.

To simplify tedious office tasks in the mid-20th century, one unknown company introduces the world's first photocopier and becomes a household name.

An underdog breaks the mold by creating instant photography, revolutionizing how we take photos. And it kicks off a war of innovation between two iconic companies battling to be the number one camera brand in the country.

Harvey Firestone races to innovation against a crosstown rival as they both bet big on bringing car tires to the nation.