Don't make your sister look too hard, Mark. Remember, you're at the Mudcat Cafe, home of the world-renowned Digital Tradition folk Song Database. You can find the song and tune by putting trailer in the search box at the upper-right corner of this page, or you can click here. I have a copy of it in the Collected Reprints from Sing Out!. It's a great song. I'm glad you introduced it to us.
-Joe Offer-