Oh-oh. I find myself in trouble with this week’s theme(s) (museum/university/library), as I haven’t got my postcards sorted like that…
The only card that popped immediately to mind was one that I received rather early on in postcrossing. And as I haven’t received all that many from Australia, I also knew where to find it.
Mitchell Library – The State Library of New South Wales in Sydney. It is the oldest library in Australia. (Link to Wikipedia.)