Reviving this thread to ask a question about whether this song came before or after 'Australia's on the Wallaby'.

Lawson's poem was published in The Worker in Brisbane in May 1891, and the 'Australia' poem/song was published anonymously in the New Australia Journal in August 1893 (in the Communist Colony in Uruguay).

Some links to the relevant references on my recent recording.

Any suggestions on an earlier source for 'Australia's on the Wallaby'?

Warren Fahey pointed out that Lawson was friends with Mary Gilmore who left for Paraguay in 1893, maybe she wrote the song based on Henry's original?