Here is some excellent discussion on "Stormalong" from Gibb and others over at the "Rare Caribbean" thread:

thread.cfm?threadid=119776&messages=218&page=4&desc=yes#2605339

Charley, "Shallow Brown" was the first thing that popped into my mind when I saw "Yankee Dollar", too. But there seems to be a lot of variety on the currency issue in "Shallow Brown". I've seen and heard "Spanish Dollar" as well and was assuming that it was earlier, but I haven't done the work on this yet. My sense is that someone is being sold to a "Yankee" in some versions. But the story is quite different from "working for a Yankee dollar".

I also wondered about "Pay Me My Money Down", but I haven't found any crossovers on this yet. Anybody else have an idea on either of these possibilities with regard to "Yankee Dollar"?