The Bathtub Hoax — a humorist’s invented history that outran its own retraction

On December 28, 1917, the New York Evening Mail ran an essay titled “A Neglected Anniversary” by the Baltimore journalist and critic H. L. Mencken, who fabricated an entire history of the bathtub in the United States and presented it, deadpan, as sober fact. The article was an invention from start to finish. Mencken later called it “a piece of spoofing to relieve the strain of war days,” written for his own amusement during the First World War. Nothing in it was true, and Mencken knew it when he wrote it.

The fiction was specific enough to be quotable. Mencken claimed the bathtub had been introduced to America on December 20, 1842, when a Cincinnati grain dealer named Adam Thompson installed the first one after encountering the device on business trips to England, where it had supposedly been invented in 1828 by one “Lord John Russell.” He invented a chorus of opposition — Cincinnati doctors warning that bathing was dangerous, a near-ban in Philadelphia, an actual prohibition in Boston — and a redemption arc in which Vice President Millard Fillmore took a bath in Thompson’s tub, then installed the first White House bathtub on becoming president in 1850, making the fixture respectable. None of these people, ordinances, or events existed as described. Lord John Russell was a real British prime minister with no connection to plumbing.

What distinguishes the case is not that readers believed the spoof but that the spoof kept being believed long after its author tried to kill it. The invented facts migrated into encyclopedias, medical literature, and standard reference works; they were quoted on the floor of Congress and crossed the Atlantic into European print. Mencken confessed in a front-page article, “Melancholy Reflections,” in the Chicago Tribune on May 23, 1926, and confessed a second time that July. The retraction barely dented the legend. As late as the 21st century, the false bathtub chronology was still surfacing in newspapers and advertising as genuine American history.

The lasting interest of the affair is mechanical rather than comic. Mencken built a fake that was modest, plausible, and useless to dispute — a small civic story no one had reason to doubt and no easy way to check — and then watched it propagate through exactly the institutions that were supposed to filter error out. It is an early, clean demonstration of what later observers would call citogenesis: a fabrication acquires authority simply by being repeated in reputable places, until the repetitions become the evidence.