Whoops-- it didn't post. (wasn't that what Squeaky Fromme said?) Try again. I'm surprised nobody has yet mentioned the other two children of Charles and Ruth Crawford Seeger-- they are Penny, (now, sadly, passed on) who had been married to John Cohen of the New Lost City Ramblers, and Barbara. Couple years ago at Phila Folk Festival I saw Pete, Peggy and Barbara (and I think some from the next generation!)sharing a stage. Mike, Peggy, Penny and Barbara recorded some of their mother's American Folk Songs for Children on the Folkways record of that name, about 1955. Loned my copy out some years ago-- mistake! PETE