Hi, Laura - As you can see, we have lots of songbooks indexed in this thread and in the other threads crosslinked above, but I can't find "Bluenose" or "Sing a Rainbow" in any of them, or in the books I haven't got around to indexing.
I guess we've concentrated on songbooks published before 1970, which may be why we don't show it.
Don't give up, though - check this thread every once in a while, and wee if somebody comes up with an answer for you.
-Joe Offer-