Hi, Mick - I got it from one of the online sites, maybe Barnes & Noble. You would think it would be available at http://www.jeanritchie.com, wouldn't you? [attn:kytrad - this is a hint]. It's also available at University Press of Kentucky, publisher of reissues of Jean's Folk Songs of the Southern Appalachians and Singing Family of the Cumberlands. The University Press of Kentucky has a number of music books that look interesting (click).
I have the Oak Publications (1963) edition of "Singing Family." It has illustrations by Maurice Sendak. I see that the new edition of the book has those same illustrations, but I wonder if the new editions of her books are all the same as the originals, or if changes have been made. "Swapping" and "Folk Songs" both have photos by George Pikow, and they're absolutely beautiful in the University Press editions.
My favorite Ritchie book is Celebration of Life, which also has George Pikow photos (although I note that I said above that my favorite was Singing Family).
-Joe Offer-