Ida Tarbell's massive investigation into John D. Rockefeller's Standard Oil exposed the unethical, often illegal business practices of the Gilded Age and helped usher in new business regulations.

Rockefeller's oil monopoly had a dark side, including cutting oil prices so low that Standard Oil was sometimes temporarily operating at a loss in order to drive competitors out of business.

Standard Oil’s impact on the business world can be clearly seen today in oil giants like Exxon and Chevron. But the journey from the Rockefellers’ trust to the modern firms was a windy road. After the Supreme Court ordered Standard Oil’s break up, the first step saw it separate into many state-based companies like Standard Oil of California and the Ohio Oil Company. Visualize it here.

From a young age, John D. Rockefeller knew he was interested in business. He worked as a bookkeeper and sold candy prior to starting the business empire that would help cement the Rockefeller name in history: Standard Oil.

In its later years, Standard Oil formed a business trust that reflected the company's exponential growth. Politicians wanted to prevent such trusts and used the Sherman Antitrust Act to force Standard Oil to break up.

“Vertical integration” is a modern business phrase that refers to a company taking on multiple stages of production—but John D. Rockefeller pioneered it with his Standard Oil company, employing its own plumbers and handling its own oil transportation.

John D. Rockefeller—the world's first billionaire—once controlled 90% of the US oil refining market, built Standard Oil through vertical integration, and used his fortune to fund universities, museums, and landmarks like Rockefeller Center.

The Rockefellers built one of the most powerful business empires in US history. By the early 1900s, their company, Standard Oil, controlled over 90% of the US oil market.

William A. Rockefeller Sr. earned his money via various schemes that included pretending to be a doctor to sell “herbal medicines” and posing as a deaf person to peddle for money.

The Rockefeller family timeline (as it relates to the business world, at least) starts in 1839 with John D. Rockefeller’s birth. In the nearly 200 years since, his offspring have gotten involved in everything from the Watergate scandal to the McCormick & Company spice business.

The Rockefeller Family Fund has been engaged in more than 40 lawsuits against ExxonMobil, a company that John D. Rockefeller’s Standard Oil created.

This podcast series traces how the US government's approach to regulating big business has changed over a century—from the DOJ's breakup of John D. Rockefeller's Standard Oil monopoly, through lawyer Robert Bork's influence on how courts interpret competition law, to the FTC's modern antitrust lawsuit against Amazon.

Standard Oil was eventually ordered to separate into 34 different entities, and over the following years, those 34 companies merged into what is now called the “Big Four” in the oil industry.

Many American monopolies popped up during the rapid industrial growth of the Gilded Age. Industries like steel, tobacco, railroads, and telecommunication have all been monopolized at some point in history.

PBS Frontline’s The Power of Big Oil reveals how industry giants like Exxon and Shell were researching climate change in the 1970s but then funded denial campaigns—using internal science to sow public doubt for decades.

One way Joseph Pulitzer revolutionized the newspaper industry was by developing an approach to reporting that relied on sensationalism and could be a little loose with the facts. Pulitzer and rival William Randolph Hearst pushed that sensationalism to the next level in their competition to attract readers.

The 1859 oil discovery in Titusville, Pennsylvania, sparked a boom in oil exploration and production to meet the demand for kerosene lamp fuel. Because the 42-gallon barrel was a readily available container already in use for shipping fish, butter, wine, and other goods, it was adopted by the Petroleum Producers Association in 1872 and by both the US Geological Survey and the US Bureau of Mines in 1882.

J.P. Morgan first backed Thomas Edison's direct current system, seeing electricity's potential to usurp John D. Rockefeller's kerosene empire. Despite the investments and smear campaign against alternating current, alternating current ultimately won public support after lighting the 1893 World's Fair, after which Morgan would fund Tesla's wireless transmission tower.

Poor's guide to the railroad industry helped investors evaluate changes and business decisions that might impact their investments. It was the first step in building the thorough datasets tracking companies and industries that Standard & Poor's is known for today.

The oil crises of the 1970s—fueled by Middle East conflict and OPEC's dominance—triggered inflation, price controls, and policy failure. But they also accelerated fracking, alternative energy, and the rise of free-market economics.

A New York commodities trader who had defrauded the American government over uninspected meat for school lunches, Anthony "Tino" De Angelis, used American Express warehouses to sell soybean oil. However, Angelis had actually filled the tanks with water and placed just enough soybean oil on top of the tanks to pass inspection. American Express was liable for many of the tanks and its stock faced a huge downturn, opening the door for a then 33-year-old Warren Buffett to make his first purchase in the company.

An NPR and PBS Frontline investigation reveals how the oil and gas industry used the promise of recycling to sell more plastic, even when they knew it would never work on a large scale.

After seeing an article in the Wall Street Journal about the unclear financials of energy companies, Chanos' firm Kynikos Associates began investigating the finances and accounting of Enron, an American energy corporation that was the seventh-largest company at the time. The firm ended up making $500M on its short positions against Enron.

As part of government research, a group of young men were paid to eat standard American food—replete with food additives like borax and formaldehyde—which revealed the dangers of unregulated food. The work was led by the first FDA commissioner, Harvey Wiley, who helped end the "century of the great stomachache."

The Saturday Evening Post’s circulation exploded in the early 20th century, due in no small part to Rockwell’s iconic cover illustrations, which often portrayed idyllic portraits of American life from the not-so-distant past. This documentary explores how Rockwell’s covers played on national nostalgia, creating a vision of the country that grew to be associated with the American Dream.

Long before there was cable news, there were newspapers, and Joseph Pulitzer was their king. A Hungarian immigrant, Pulitzer began his career as a reporter himself before buying a newspaper that he could shape with his editorial vision. Pulitzer's papers were bold, provocative, and visually striking, setting a new standard for newspapers nationwide as they moved into the 20th century.

Investing comes with great opportunities for reward, but it also carries great risk. Investors learned that the hard way when Enron collapsed. Everyone lost money—from the largest institutions on Wall Street to mom-and-pop investors who bought S&P 500 index funds. This series from American Scandal starts with a close-up into an investment manager at Enron who started to unravel the accounting scandal happening behind the scenes. Listen here.

This legally reduced his taxable income under existing laws. Similarly, the Rockefellers leveraged charitable foundations to minimize taxes, allowing them to preserve wealth while directing funds to their preferred causes.

- Billionaire John D. Rockefeller (1839-1937)

This episode of The Rest Is History podcast traces oil's pivotal role—from fueling industrial growth to steering imperial power. It also examines how access to oil shaped US politics, World War II, and sparked the creation of OPEC following the Suez Crisis.

This documentary argues that GM systematically bought up and destroyed streetcar networks across the US in the 1930s, replacing them with buses and helping put the automobile at the center of American culture.

John D. Rockefeller Jr. and his wife spent millions of dollars restoring Colonial Williamsburg and turning it into the tourist attraction it is today. You can go back in time via video footage from before and after the restoration.

In the aftermath of the Great Depression, Congress learned that Morgan and his banking partners had avoided paying any federal income tax in 1931 and 1932. By claiming their losses in the stock market, they seemingly erased what they owed.