The longest related thread up above seems to do the best job of covering Robert's question. Suffice to say Lawson's poem "The Outside Track" makes a great song and many well-known singers have recorded versions of it, including Maine's own Gordon Bok.

I do have James Fagan's recording as well, and he does include the alternative last chorus. I enjoyed singing my version of the song to his parents at a song party in Sydney a few years ago.

Cheerily,
Charley Noble