The reference I'd suggest would be 'The Overlanders Songbook' by Ron Edwards (Australia). The American and Australan gold rushes occurred at roughly the same times, a number of gold diggers tried their luck on both continents and as a consequence both areas have a shared heritage of gold songs. The songs of the Australian gold rushes in Victoria, New South Wales and North Queensland are very well documented. Ron Edwards was my first thought, but BOB Bolton is much more clued up on this stuff than I am. Regards, John