A remarkable copy of Leonardo da Vinci's Mona Lisa - by Adelaide-born artist Mortimer Menpes - is now on show in the Treasures Gallery.

It is one of the star attractions in the new display in the Treasures Gallery which showcases prized items from the Library's vast collection.

Menpes' Mona Lisa is one of the Library's 38 copied masterpieces by the artist. They were presented to the Commonwealth of Australia in 1911 by Menpes, who was a protege of 'The Master', James McNeill Whistler.

Other new items on show in the Treasures Gallery include a manuscript letter from Louis Pasteur, a song by The Wiggles and a rare newspaper from Fiji.

 The National Library Treasures Gallery is open daily, 10am to 5pm. Free admission.