Lora in PA, I think "Threw it Out the Window" is much, much older than Trout Fishing in America. I think it was in the Boy Scout or Cub Scout songbook years ago. I learned it in Scouts in the 1950's. I can't remember much of it, but here's a verse for example's sake:
Old Mother Hubbard
Went to the cupboard
To get her poor dog a bone
But when she got there
The cupboard was
So she threw it out the window, the window, the second-story window.
And so forth.

I wish I could find some of those old Scout songbooks I used to have,
Since they're worth a lot of money now
But I never really liked them
So I threw them out the window.....

-Joe Offer-