Is There a Hidden Drawing Beneath the 'Mona Lisa'?

Newly detailed high-resolution scans show traces of a charcoal underdrawing

How The Theft Of Leonardo's 'Mona Lisa' Made It The Most Famous Painting In The World – Robb Report UK

A Hidden Drawing Lies Beneath the 'Mona Lisa,' New Ultra-High-Resolution Images Reveal

High-Res Image Scan Detects Hidden Drawing Under The 'Mona Lisa

10 Secrets of The Mona Lisa by Leonardo da Vinci

Mona Lisa': Hidden portraits 'found underneath

Mona Lisa - painting analysis

The Mona Lisa - Genius or Accidental Art Painting - Inspired By Elle

Mona Lisa Underdrawing Researchers Discover a Hidden Drawing Behind 'Mona Lisa

Scientist Discovers Hidden Drawing Beneath the 'Mona Lisa' –

Mona Lisa's Hidden Symbols? Researcher Says Yes - CBS News