I can't find a tab for "Leave Her Johnny, leave her" anywhere.
I love Clam Chowder and all the old shanties that they sing, so any of those would be great. some other ones i would love are:
Rollin' down to old maui
John of Dreams
here's some of their downloadable songs. I don't even know if they are still playing, but I'd love to have some tabs for a few of these songs.
http://clamchowdermusic.com/list_clam.html