There was much mention in this thread of the book Chris Kempster put together, Songs of Henry Lawson. A second and much expanded edition was published by the Folk Federation of New South Wales in 2008 (Kempster having passed away in 2004). The Folk Fed has a website, it's possible copies of the 2nd edition are still available. It doesn't have any additional settings of The Bush Girl, just the six from the 1st edition.