Just for the record, as if anyone cares, I did not mean to appear critical of the previous comments about Dylan and Seeger. They are both human and have their failings; I guess Seeger has a flaw or two. I certainly do not object to people speaking their opinions. I just wanted to put in a word for the other side. Both have brought a great deal of pleasure.
I have never been bothered by Dylan's appropriation of tunes. He took some good ones. Woody did it as well and others before him. I was somewhat surprised a few years ago, when I heard a recording of the Carter Family singing a gospel song with a tune quite similar to This Land Is Your Land. The proper thing would be to give credit when due, but some some songsters may have carried tunes in their heads and never knew where they came from.