The Time the Soviets Gave the U.S. a Hidden Spy Device—And It Took Seven Years to Discover It

A replica of the Great Seal bug at the National Cryptologic Museum
A replica of the Great Seal bug at the National Cryptologic Museum
Daderot, Wikimedia // CC0 1.0

In the summer of 1945, at the tail end of World War II, a group of Russian schoolchildren arrived at the residence of the United States ambassador in Moscow—and they came bearing a gift. The Vladimir Lenin All-Union Pioneer Organization 1, a kind of Soviet version of the Boy Scouts, presented a large carved wooden replica of the Great Seal of the United States to U.S. Ambassador Averell Harriman, calling it a gesture of friendship to their wartime allies, the United States.

Harriman hung the wooden plaque in his study at the Spaso House, which served as his residence. But what he didn't know was that the plaque contained a cutting-edge listening device, used by the Soviets to eavesdrop on his conversations whenever they wanted. The plaque hung undetected in the ambassador’s study until 1952—a staggering seven years. It would come to be known colloquially as "The Thing."

The Walls Have Ears

Leon Theremin demonstrating his theremin in 1927
Topical Press Agency/Getty Images

The device was the brainchild of the Russian inventor Léon Theremin. In the U.S., Theremin is best known for his eponymous musical instrument, the theremin, which he invented while working for the Soviet military in 1920. But almost two decades after creating the instrument, Theremin found himself in a Siberian gulag. Once in the prison system, he was conscripted to create high-tech radio listening devices in a secret laboratory.

With his second-greatest creation, The Thing, Theremin nearly upstaged himself. Unbeknownst to casual viewers, the wooden Great Seal of the United States he created was like a sandwich cookie, with a tiny capacitive membrane connected to a small quarter-wavelength antenna—which together acted as a microphone—standing in for the cream filling. Theremin's hidden bug wasn't connected to a battery or power supply; the device only worked when a radio signal of the correct frequency was sent to the device from an external transmitter. This signal came via a van parked nearby that could broadcast a strong radio signal, activating the Thing and allowing the Soviets to eavesdrop, via a radio receiver, on unwittingly broadcasted conversations from within the Spaso House study.

Suspicious Voices

Exterior of Spaso House, the residence of U.S. Ambassador in MoscowU.S. Embassy Moscow, Wikimedia // Public Domain

It was the British who first noticed something was amiss. In 1951, a British radio operator was monitoring Soviet air force radio traffic, in their own bit of espionage, when he recognized the voice of the British Air Attaché. It's not exactly clear what happened next, but the following year, an American listening to military radio traffic picked up a conversation featuring American-accented voices that clearly seemed to come from the Spaso House. A few bug-searching sweeps of the embassy, coordinated with the move-in of incoming U.S. ambassador George F. Kennan in May 1952, turned up nothing. But on September 12, 1952, with suspicions still raised, the State Department's security technicians Joseph "the Rug Merchant" Bezjian and John Ford conducted another search for good measure, knowing that the Soviets sometimes removed bugs and later replanted them.

At Bezjian's directive, Kennan sat at his desk and dictated an important-sounding message to his secretary while Bezjian searched the room with his radio instruments. When he switched on his receiver, he picked up a signal almost immediately. Something was broadcasting Kennan's voice from down in the study, and it was something very close by. Minutes later, the team found just what they were looking for—hanging right on the wall.

That night, Bezjian slept with the device under his pillow so that it couldn't be stolen back by the Soviets. It was shipped to Washington, D.C., the next day to be studied.

Kennan published his memoirs of the period in 1967. In the book, he wrote chillingly about the moment he realized that the Soviets had a microphone in his own private study: "It is difficult to make plausible the weirdness of the atmosphere in that room, while this strange scene was in progress … At this particular moment, one was acutely conscious of the unseen presence in the room of a third person: our attentive monitor. It seemed that one could almost hear his breathing. All were aware that a strange and sinister drama was in progress."

Turnabout Is Fair Play

The U.S. didn't initially confront the Soviets about their discovery, and the device was kept secret from the media for several years. But the word got out in 1960: On May 1 of that year, the Soviets shot down an American U2 spy plane and then called a meeting with the United Nations Security Council, calling the U.S.'s espionage an act of aggression. The Thing was subsequently trotted out to prove that spying went both ways between the countries—and had for years.

By then, however, the device was well-known to British and American espionage agencies. After examining the bug's technology, the Brits were able to improve upon it and develop a listening device codenamed SATYR, which was utilized by the British, American, Canadian, and Australian militaries throughout the '50s.

It's not entirely certain where the Thing is located today. It was handed over to the FBI for analysis soon after its discovery, and at some point its membrane was damaged and had to be replaced. It was then sent to the National Security Agency, but it's not clear what happened after that. (The NSA likes their secrets.) However, there's a very faithful copy on display at the National Cryptologic Museum in Fort Meade, Maryland, along with a detailed exhibit showing exactly how Theremin and his lab built the device.

Unlike the original, handling the replica is encouraged; visitors can open up the wooden cabinet to view the recreated microphone and the resonant cavity inside. It's a way to engage with a particularly bizarre chapter in U.S.-Soviet relations—a time when even though the nations pretended to be friends, it was wise to beware schoolchildren bearing gifts.

11 Masks That Will Keep You Safe and Stylish

Design Safe/Designer Face Covers/Its All Goods
Design Safe/Designer Face Covers/Its All Goods

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10 Fascinating Facts About Herman Melville

Hulton Archive/Getty Images
Hulton Archive/Getty Images

Born in New York City to a wealthy and socially connected family, Herman Melville (1819-1891) chose a life as exciting as that of his Moby-Dick narrator Ishmael. He spent years at sea on whaling ships and traveled to far-flung places, but also struggled to make it as a novelist while supporting a large extended family. To celebrate his birthday on August 1, we’re diving into Melville’s adventures and fishing for some surprising facts.

1. Herman Melville's mother changed the spelling of their last name.

Despite his family’s wealth and pedigree—his mother Maria Gansevoort descended from one of the first Dutch families in New York, and his father Allan Melvill came from old Boston stock—young Herman had an unstable, unhappy childhood. Allan declared bankruptcy in 1830 and died two years later, leaving Maria with eight children under the age of 17 and a pile of debt from loans and Allan’s unsuccessful businesses. Soon afterward, Maria added an "e" to their surname—perhaps to hide from collection agencies, although scholars are not sure exactly why. "It always seemed to me an unlikely way to avoid creditors in the early 19th century," Will Garrison, executive director of the Berkshire Historical Society, tells Mental Floss.

2. Herman Melville struggled to find employment.

Thanks to a national financial crisis in 1837, Melville had difficulty finding a permanent job, but it wasn’t for lack of trying. He served as a bank clerk, teacher, land surveyor, and crew member on a packet ship before signing on, in 1841, to the whaler Acushnet of New Bedford, Massachusetts, then the whaling capital of the world. He served aboard a few different whalers and rose to the role of harpooner. His adventures at sea planted the seeds for Melville’s interrogation of man, morality, and nature in Moby-Dick. In that novel, Melville (in the voice of Ishmael) says, "A whale-ship was my Yale College and my Harvard."

3. Herman Melville jumped ship in the middle of a three-year voyage. 

Melville and the Acushnet’s captain didn’t get along, so when the ship reached the Marquesas Islands, Melville and a friend, Richard Tobias Greene, hid in the forests until the ship departed. They spent a month living with the Pacific Islanders. Melville was impressed with their sophistication and peacefulness; most Europeans believed that Polynesians were cannibals. He also found reason to criticize European attempts to "civilize" the islanders by converting them to Christianity. Melville drew on his South Pacific experiences in his first two novels, which became runaway bestsellers: Typee (1846) and Omoo (1847).

4. Herman Melville was inspired by a mountain.

Herman Melville's home, Arrowhead, in Pittsfield, MassachusettsDaderot/Wikimedia Commons/CC BY-SA 3.0

Melville moved to Arrowhead, his charming mustard-colored home in Pittsfield, Massachusetts, with his wife Elizabeth and their son in 1850, after he achieved fame as a popular adventure novelist. In the upstairs study, he set up his writing desk so he could look out the north-facing window, which perfectly framed the summit of Mount Greylock, Massachusetts’s tallest mountain. Gazing at the peak on a sunny day, Melville was struck by how much the horizontal apex looked "like a sperm whale rising in the distance." He arranged his desk so he would see the summit when he happened to glance up from his work. In that room, in early 1851, Melville completed his manuscript of Moby-Dick.

5. Herman Melville fictionalized an actual whaling disaster.

While on the Acushnet, Melville had learned about an infamous shipwreck from the son of one of its survivors. In November 1820, a massive sperm whale had attacked and sunk the whaleship Essex of Nantucket in the middle of the Pacific Ocean. Its crew, stranded in three small boats with little food or water, chose to drift more than 4000 miles to South America instead of 1200 miles to the Marquesas Islands—where Melville had enjoyed his idyll—because they thought they’d be eaten by the natives. Ironically, some of the castaways ended up eating their dead shipmates to survive.

Melville used the disaster to form the climax of Moby-Dick, in which the Pequod of Nantucket is destroyed by the white whale. Melville visited Nantucket for the first time only after the novel was published. He personally interviewed the Essex’s captain, George Pollard, who had survived the terrible ordeal and become the town’s night watchman. Later, Melville wrote, "To the islanders he was a nobody—to me, the most impressive man, tho’ wholly unassuming, even humble—that I ever encountered."

6. Moby-Dick was a flop.

Readers who were expecting another rip-roarin’ adventure like his earlier novels Typee or Redburn were sorely disappointed when Melville’s masterpiece was published in November 1851. The British edition of Moby-Dick, or The Whale received some positive reviews in London newspapers, but American reviewers were shocked at its obscure literary symbolism and complexity. “There is no method in his madness; and we must needs pronounce the chief feature of the volume [the character of Captain Ahab] a perfect failure, and the work itself inartistic,” wrote the New York Albion. The reviewer added that the novel's style was like "having oil, mustard, vinegar, and pepper served up as a dish, in place of being scientifically administered sauce-wise."

7. Herman Melville was very fond of his chimney.

Arrowhead became the locus of Melville’s family life and work. Eventually, he and Lizzie, their two sons and two daughters, his mother Maria, and his sisters Augusta, Helen, and Fanny all lived in the cozy farmhouse. For a couple of years, Nathaniel Hawthorne was such a frequent guest that he had his own small bedroom off Melville’s study. After Moby-Dick, Melville wrote the novels Pierre and The Confidence-Man, his collection of works called The Piazza Tales, short stories including “Bartleby the Scrivener,” and many other pieces there. Melville grew very attached to the house, especially to the massive central chimney, which he immortalized in his 1856 short story “I and My Chimney.” Yet his financial struggles after Moby-Dick failed to find an audience led Melville to sell Arrowhead to his brother Allan in 1863. As an homage, Allan painted a few lines from “I and My Chimney” on the chimney's stonework, which are still visible today.

8. Herman Melville finally got a day job.

Melville’s chronic money woes prompted a return to New York City, into a brick townhouse at 104 East 26th Street in Manhattan, where the family benefited from being back in the bustle of civilization. Melville finally found regular employment as a district inspector for the U.S. Customs Service and maintained an office at 470 West Street. At the same time, he mostly abandoned writing short stories and novels in favor of poetry. In between inspections he wrote Clarel: A Poem and Pilgrimage in the Holy Land, based on his visit to the Middle East in 1857. Because of its length—at more than 18,000 lines, it's the longest poem in American literature—and unconventional approach to its subject, Melville once called it "eminently adapted for unpopularity."

9. Herman Melville's last major work was discovered by accident.

The centennial of Melville’s birth renewed interest in his novels and poems, most of which were long out of print by then. Raymond Weaver, a literature professor at Columbia University working on the first major biography of Melville, collaborated with Eleanor Melville Metcalf, Melville’s granddaughter and literary executor, who gave him access to the author’s papers. In 1919, while poking through letters and notes, Weaver discovered the unfinished manuscript of Billy Budd in a tin breadbox. Melville had started to write the short story about a tragic sailor in 1888 but, by his death in 1891, had not completed it. Weaver edited and published the story in 1924, but initially considered the tale "not distinguished." Other scholars asserted that Billy Budd was Melville’s final masterpiece.

10. You can see Herman Melville's personal collection of knick-knacks.

Just a short drive from Arrowhead, the Berkshire Athenaeum in Pittsfield holds the world’s largest collection of Melvilliana in its Melville Memorial Room. Along with first editions of Melville’s work and a full library of books about him, there are priceless objects owned by or associated with the author. Fans can geek out over the earliest known portrait of Melville, painted in 1848; carved wooden canoe paddles that he collected in Polynesia; his walking stick; his favorite inkstand, quills, and other desktop tchotchkes; a collection of scrimshaw, maps, and prints; and Elizabeth Melville’s writing desk. There's a section of the first successful transatlantic cable, which Melville valued as a prized souvenir, and even the actual breadbox in which Billy Budd had been hiding.