Sotheby's -- which held the sale -- had described the often very simple ink sketches and pieces of prose as "the most extensive collection of John Lennon's original artwork, autograph manuscripts and corrected typescripts ever to come to auction."
And that appeared to motivate buyers, who snapped up the 89 lots on offer in just two hours.
Estimated to be worth $850,000 to $1.2 million, the pieces ended up pulling in $2.9 million -- including 25 percent in buyer fees, an amount not included in value projections.
That put a smile on auctioneer Benjamin Doller's face as he brought down the hammer after the sale of the last piece.
The items comprise the original material that appeared in two books by Lennon -- "In His Own Write," published five decades ago this year, and "A Spaniard in the Works," which hit the best-seller lists in 1965.
At times handwritten, at times typed up, they came from the private collection of London publisher Tom Maschler, creator of the Booker Prize.
Before becoming a musician, Lennon was known for his love of drawing. Already as a Liverpool schoolboy, he stood out not for being a stellar student but for the funny comics he created.
- Manuscript fetches $209,000 -
The most expensive piece to be auctioned off -- a nine-page, handwritten manuscript titled "The Singular Experience of Miss Anne Duffield" with an estimated worth of $50,000 to $70,000 -- went for $209,000, fees included.
A poem, "The Fat Budgie," three pages written in green ink whose pre-sale estimate was between $25,000 and $35,000, went under the hammer for $143,000.
Many drawings surpassed the $30,000 mark. The last to hit the auction block, featuring a four-eyed guitar player, garnered $109,375. Its estimated worth prior to the sale was $15,000 to $25,000.
A drawing of a young boy and six birds that appeared in "A Spaniard in the Works" and that served as a cover for the "Free as a Bird" single Lennon wrote in 1977, fetched $27,500 -- almost twice its maximum estimated value of $12,000 to $15,000.
Meanwhile, a somber black ink sketch featuring two cats, valued at $5,000 to $7,000, sold for $37,500.
Lennon, a founding member of the Beatles, was murdered in New York in December 1980 at the age of 40, three weeks after the release of his last album "Double Fantasy," a collaboration with his wife Yoko Ono.