American author Jack London embarks on a sailing trip to take part in the Klondike's gold rush, from which he wrote his first successful stories.

John Griffith London, better known as Jack London, was an American novelist, journalist and activist. A pioneer of commercial fiction and American magazines, he was one of the first American authors to become an international celebrity and earn a large fortune from writing. He was also an innovator in the genre that would later become known as science fiction.

The Klondike is a region of the territory of Yukon, in northwestern Canada. It lies around the Klondike River, a small river that enters the Yukon River from the east at Dawson City. The area is merely an informal geographic region, and has no function to the territory as any kind of administrative region.

A gold rush or gold fever is a discovery of gold—sometimes accompanied by other precious metals and rare-earth minerals—that brings an onrush of miners seeking their fortune. Major gold rushes took place in the 19th century in Australia, Greece, Venezuela, New Zealand, Brazil, Chile, South Africa, the United States, and Canada while smaller gold rushes took place elsewhere.

July 25 is the 206th day of the year in the Gregorian calendar; 159 days remain until the end of the year.