Railroads’ impact in the U.S.A.: an online, HBS Baker Library exhibition

What more than 240,000 miles of railroad track can do

The I.L. Ellwood Company used gleaming locomotives to highlight the advantages of its "barb wire" fencing.
An advertisement for the Atchison, Topeka and Santa Fe Railroad

Has barbed wire ever been portrayed more glamorously than in the prettily framed advertising poster above for the I.L. Ellwood Company? A fence of the material, built to protect one’s livestock from oncoming trains, had clear advantages over a wooden fence. It would last twice as long. Sparks would not set it on fire. Floods would not sweep it away.

Railroads: The Transformation of Capitalism, an online exhibition created by the historical collections department of Harvard Business School’s Baker Library (see www.library.hbs.edu/hc/railroads/index.html), notes that the railroad industry required standardized, mass-produced parts for its daily operations, especially as the lines grew and merged with one another. By the late 1800s, the Baldwin Locomotive Works in Philadelphia was producing nearly a thousand locomotives annually. Other companies manufactured thousands of specialized standard parts necessary for railroad operations, such as water injectors, signal oils, hydraulic pumps, ticket punches, and, indeed, barbed wire.

“Through the wide distribution of agricultural products, raw manufacturing materials, and finished consumer goods from other industries, the railroads fostered mass production and opened new national markets,” the editors of the exhibition text point out. “A company could create a mass-produced product—whether sewing machines or plows—in one region of the country and transport it via rail for sale in another region. The speed, efficiency, and scale with which items were produced and shipped resulted in lower costs.” The railroads set in motion the combined forces of mass production, distribution, and communication.

Productivity rose almost sixfold in the United States during the era of railroad expansion, as westward the star of empire took its way. The late Thomas K. McCraw, Straus professor of business history, wrote that during this period “the growth of big business was the central trend of the American economy.” The formation of what would become Fortune 500 companies spiked. By World War I, America’s journey from an agrarian society to a leading industrial power was complete. The editors of the exhibition sum up: “The rise of modern American capitalism, enabled by the expansion of the railroad, was one of the transformative developments of the nineteenth century—and one that historians refer to as the second industrial revolution.”

Read more articles by Christopher Reed

You might also like

How to Cook with Wild Plants

From wild greens spanakopita to rose petal panna cotta, forager and chef Ellen Zachos makes one-of-a-kind meals.

A New Black Swan Musical Cranks Up the Tension

The creative team of the A.R.T.’s new show dish on adapting Darren Aronofsky’s thriller classic from screen to stage.

Houghton Library Displays Revolution-era News and Propaganda

A new exhibit reveals how early Americans learned about the war.

Most popular

Harvard Faculty Approve a Cap on A Grades

Reforms to reduce grade inflation will take effect in the fall of 2027.

Harvard Alumni and Faculty Win Six Pulitzer Prizes

Winners include Jill Lepore, Bess Wohl, Pablo Torre, and Hannah Natanson.

Meet Harvard’s 2026 Student Commencement Speakers

Two undergraduates and a Ph.D. candidate will address the graduating class on May 28.

Explore More From Current Issue

Historical battle scene with soldiers in red and blue uniforms, flags waving, chaotic action.

The Harvard-Trained Doctor Who Urged a Revolution

Before his heroic death, General Joseph Warren was dubbed “the greatest incendiary in all of America.”

A woman with long hair leans on a table, looking out a large window with rain-streaked glass.

A Harvard Economist Probes the Affordable Housing Crisis

From understanding gender pay gaps to the housing crisis, Rebecca Diamond’s research aims to improve lives.

Brick archway with a sandy base, surrounded by wooden planks and boxes in a dim space.

How the American Revolution Freed a Future Abolitionist

Darby Vassall, an enslaved child freed after the Battle of Bunker Hill, dedicated his life to fighting for liberty.