Okay, I am a year late responding here.... I didn't read the thread anymore after my last post so I didn't see the questions about the Dixie Chicks! But Gary T is right.... there was Laura Lynch (who had a standup bass shaped like a cactus), Robin Macy, and Emily and Martie. Robin left, then Laura. The sisters regrouped with Natalie and put forth a whole different sound.

The two original albums were called Thank Heavens for Dale Evans and Little Ol' Cowgirl. They're out of print but you might be able to buy them used somewheres.

There Was an Old Soldier and He Had a Wooden Leg is a whole different song, I think... I know one with those words, but it's a way different melody.