A charcoal drawing housed in another art collection for more than 150 years may have been a sketch for the Mona Lisa, a French art expert says. The charcoal portrait of a nude woman, known as the ...

Some people are convinced it ... of the Isleworth Madonna [as Earlier Mona Lisa is also known] is just tediously exact and is clearly the kind of drawing that's made when you're copying something ...

Explore Leonardo da Vinci's most famous works like the Mona Lisa, as well as his drawings and unfinished works. In 1517, Leonardo showed a visitor a portrait of Lisa del Giocondo, the wife of a ...