Dover Books has/had (don't know if it's still in print) a paperback collection of "100 English Folk Songs" collected by Sharp, with piano settings and lyrics. Another paperbound collection of 80 folk songs from Sharp's Appalachian collection was published recently (don't have publishers' name handy), but it's now out of print; you may be able to find it in a local used book store. I'll check my copy when I get a chance and give the ISBN, etc, if you want to do a book search.