How Did John D. Rockefeller Get So Rich? One Drop at a Time

John D. Rockefeller went from one small Cleveland oil refinery in 1865 to control of about 90 percent of America's oil refining by 1879, and this documentary shows exactly how he did it, move by move. John D. Rockefeller never asked how big a thing was, only what it cost, down to the last drop, and that habit built the Standard Oil monopoly. We follow a quiet bookkeeper and the little account book he called Ledger A, through the 1865 auction against his own partner, the secret railroad deals of 1872, the six weeks when Standard Oil took over 22 of its 26 Cleveland rivals, and the single drop of solder that saved a fortune. Then Ida Tarbell turns his own records against him, the Sherman Antitrust Act finally bites, and the 1911 breakup leaves him richer than ever. If you have ever asked how did Rockefeller get rich, this is the whole story, from one refinery to ExxonMobil, Chevron and BP. Watch next: Kodak History: Why the Best Tech Failed to Save Them —    • Kodak History: Why the Best Tech Failed to...   Full playlist: Dynasties & Trading Empires | Business History Documentaries —    • Dynasties & Trading Empires | Business His...   Chapters: 00:00 The bid that started it all 01:16 A boy who wrote everything down 03:48 Oil fever in Pennsylvania 05:43 The 1865 auction: $72,500 06:57 Standard Oil is born, 1870 08:01 The South Improvement scheme 09:09 Six weeks in Cleveland 10:05 Thirty-nine drops of solder 12:21 90% of America's refining 12:47 The Standard Oil Trust 15:07 Ida Tarbell takes on Standard Oil 17:40 1911: the Supreme Court breakup 19:52 How did Rockefeller get rich? 22:06 His last years and his giving 22:55 Exxon, Mobil, Chevron and BP 23:33 Back to the auction room Subscribe to Business History Stories for more long-form stories about the tycoons, companies and turning points that built America. Narration uses an AI-assisted voice. Illustrations are AI-generated reconstructions, not archival photographs. #americanhistory #johndrockefeller #rockefeller #standardoil #historydocumentary #gildedage #businesshistory