Hope this question is in the right place (please move or delete if not!)

I'm looking for the name of my elementary school music textbook(s). The songs that I remember are The Ballad of the Bluenose, Happiness Is, I Can Sing a Rainbow, and "As I was walking the streets of Laredo..." I don't know whether they're in one book or two, since I'm not positive that we sang them all in the same year. The books were used in Southeast Missouri, 1978-1981 (but were quite possibly older copyrights).

I've searched everything I can find here and found references to a couple of the songs (though I don't recall the book calling the last song "The Cowboy's Lament"), but none of them are together or have any other songs that ring a bell. Searching at UTK has given me nothing, so far. Any suggestions of other places to look or better techniques would be greatly appreciated! Thanks!