Mike and Peggy Seeger have a two-CD set "American Folk Songs for Children" with their renditions of the songs from their mother's book. Also check out Trout Fishing In America--that's the group, I forget the name of their children's album; it includes "The Cat Came Back," "Pico de Gallo" and lots of other gems. Also, Harvey Reid's "Steel Driving Man" is a great recording of folk songs, most of which are appropriate for children.