or here: https://www.songfacts.com/facts/the-weavers/if-i-had-a-hammer

Another quotation from that page:
In a 1988 interview with Paul Zollo, Pete Seeger said: "The way I sing it now, what I often do is joke with an audience. I point out that you can sing it the way I wrote it or the way Peter, Paul and Mary rewrote it, or half a dozen other ways, and they all harmonize with each other. I say, 'This is a good moral for the world.' As a matter of fact, I'm convinced that musicians have got a more important role to play in putting a world together than they're usually given credit for. Because musicians can teach the politicians: Not everybody has to sing the melody." (From Zollo's book Songwriters On Songwriting.)