Help!

There's a guy here (Vancouver) singing a song called "Time to Go" or maybe "It's Time to Go". I had the impression that it was a Utah Phillips song, and there is a song with that name on the CD The Rose Tattoo, which I don't have. The chorus of the song is something like:

So come on you old railroad bum, it's time to go,
It's time to go, it's time to go
You railroad bum, get up and go
Rattlin' back to where your soul is free...

Does anyone know this song? Is that the one on The Rose Tattoo? If not, where can I find it?