Peter:

As you obviously know, it isn't as a rule too difficult to find the text and melody for songs like this; if it's "the chords" you're after, though, you probably will have problems.  Most of these songs were not put together with any particular accompaniment (with anyaccompaniment,as often as not) in mind; usually people who want to perform them will make their own arrangements.  You may be able to find them ready-made, but I guarantee you'll learn a lot more by sitting down and sorting them out for yourself.  It's the best way of learning accompanying skills, and that kind of effort is never wasted.  Modern arrangements are probably still in copyright, and may not be available on the Web.

Malcolm