Help the National Library of Australia ensure the survival of one of the rarest maps in the world, Joan Blaeu's 1663 Archipelagus Orientalis.

Recently acquired by the Library in a fragile state, the Blaeu map has been stabilised by our expert preservation staff and is now on show in the Treasures Gallery as part of the Mapping Our World: Terra Incognita to Australia exhibition.

But more conservation work is needed to ensure the rare map survives for future generations to see.