ROME, Aug. 30 (UPI) -- A New York art dealer says she does not believe a painting she once owned was created by famed Italian painter Leonardo da Vinci.

ROME, Feb. 26 (UPI) -- Researchers say an early guide to playing the game of chess might have been illustrated by Italian artist Leonardo da Vinci.

ROME, Aug. 16 (UPI) -- Leonardo da Vinci is the subject of an Italian cartoon series that reportedly plays fast and loose with details of his life.

VENICE, Italy, June 10 (UPI) -- A pen-and-ink drawing of an old woman, owned by an Italian industrialist, has been newly attributed to Leonardo da Vinci.

FLORENCE, Italy, May 29 (UPI) -- An Italian art scientist has discovered sketches by an unknown artist underneath Leonardo da Vinci's "Adoration of the Magi."

URBANA-CHAMPAIGN, Ill., March 7 (UPI) -- A University of Illinois scientist says Mona Lisa probably wasn't a man, and it's even more unlikely it was a self-portrait of Leonardo da Vinci.

TURIN, Italy, Feb. 13 (UPI) -- An Italian professor says the portrait the world has come to know as a likeness of Leonardo da Vinci probably does not resemble the real man.

ANCONA, Italy, Oct. 15 (UPI) -- A museum in Ancona, Italy, is displaying a never-seen-before painting believed to have been created by Leonardo da Vinci.

NAPERVILLE, Ill., Dec. 30 (UPI) -- Tellabs of Naperville, Ill., said Thursday it acquired Vinci Systems in Vienna, Va.

PARIS, April 26 (UPI) -- Mona Lisa's smile may turn into a scowl if Leonardo da Vinci's famous portrait isn't restored, experts at the Louvre museum warned Monday.