Thomas Rogers spent nearly two decades designing textile machinery before he saw the future arriving on iron rails. In 1831, he sold his stake in Godwin, Rogers & Company and formed a new partnership with Morris Ketchum and Jasper Grosvenor. The firm, Rogers, Ketchum and Grosvenor, set up shop in Paterson, New Jersey, a city whose industrial character had been shaped since Alexander Hamilton chartered the Society for Establishing Useful Manufactures there in 1791. Paterson's Great Falls powered its mills; the Passaic River gave it transport. Rogers recognized that the same metalworking skills his factory used for textile machines could be applied to the booming railroad industry. By 1837, the company was building its first locomotives, and within a decade, Rogers engines were hauling freight and passengers across the expanding American rail network. The transition from looms to locomotives was not as dramatic as it sounds. Both required precision casting, machining, and assembly. Rogers simply redirected his factory's capabilities toward a product with vastly larger demand.

Under Thomas Rogers' leadership, the Paterson works grew into one of America's premier locomotive manufacturers. The Louisville and Nashville Railroad became such a prolific customer that Rogers gave them a free locomotive as a thank-you bonus in 1879. Railroads in Chile, New Zealand, Cuba, and across Latin America ordered Rogers engines. The company built No. 119, the Union Pacific locomotive that stood opposite Central Pacific's Jupiter at the Golden Spike ceremony at Promontory Summit in 1869, though No. 119 would serve quietly for another thirty-four years before being scrapped in 1903. A full-scale operating replica, completed in 1979, now runs at the Golden Spike National Historic Site. When Thomas Rogers died in 1856, his son Jacob reorganized the firm as Rogers Locomotive and Machine Works. Jacob ran the company for nearly four decades, gradually passing responsibility to shop superintendent Reuben Wells before retiring in 1893. The firm was then reorganized under treasurer Robert S. Hughes as the Rogers Locomotive Company, ending over sixty years of family leadership.

The turn of the twentieth century was unkind to independent locomotive builders. In 1901, eight manufacturers merged to form the American Locomotive Company, known as ALCO, creating an industrial giant that could compete with the Baldwin Locomotive Works for dominance of the North American market. Jacob Rogers, in the last year of his life, chose independence. He closed the Rogers Locomotive Company and reopened it as Rogers Locomotive Works, with Reuben Wells back as shop superintendent. But the revived firm faced impossible odds. Capital investment had lagged, leaving the factory with aging equipment and no research budget. Worse, Rogers had no direct rail connection; the nearest railroad, the Erie, lay more than half a mile to the east, forcing the company to transport finished locomotives by road. ALCO and Baldwin held too much of a lead in manufacturing capacity and sales networks. By 1905, ALCO purchased Rogers outright. The factory continued building locomotives under ALCO's banner until 1913, then served as a parts warehouse through the 1920s before being sold to private investors.

Rogers-built locomotives survive in scattered museums and heritage railways across the globe. The General sits in the Southern Museum of Civil War and Locomotive History in Kennesaw, Georgia, its iron frame a relic of both nineteenth-century engineering and wartime audacity. A Rogers engine built for Chile's state railway in 1893 is preserved in Santiago. Another, built in 1880, rests at the Illinois Railway Museum. In Cuba, a Rogers locomotive designated MINAZ No. 1216 survives from the island's sugar-hauling rail network. In New Zealand, a Rogers-built K-class engine known as Washington endures as a testament to the company's global reach. These machines, scattered across continents, trace the arc of an era when American factories supplied the world's appetite for rail transport. Each one rolled out of the same Paterson works on the Passaic River, built by the same workforce that had once made textile looms.

The Rogers erecting shop, where locomotives were assembled from components manufactured across the sprawling factory complex, still stands in Paterson. It is now the Thomas Rogers Building, home to the Paterson Museum, whose mission is to preserve the city's industrial heritage. The building is a rare survivor from an era when Paterson was one of America's manufacturing capitals, producing not just locomotives but silk, firearms, and aircraft engines. The New Jersey Historic Trust has supported preservation efforts on the structure. Walking through it today, you can trace the proportions of a space designed to accommodate the largest machines of its age. The overhead clearances, the floor layout, the reinforced foundations all speak to the weight and scale of steam locomotives. Outside, Paterson's Great Falls still thunder over the Passaic, the same waterpower that drew Hamilton's vision and Rogers' enterprise to this spot. The locomotives are gone, shipped to every corner of the world. The building that made them endures.