As Nutty indicated, it looks like it's a songbook used in Waldorf schools. This site gives information:

Jaffke C. and Maier, M., Early One Morning. Folk Songs - Rounds - Ballads - Shanties - Spirituals and Plantation Songs - Madrigals, Rudolf Steiner Library, Rudolf Steiner College Bookstore in US (Fair Oaks, California), Rudolf Steiner Bookshop, London.

My wife and stepson were associated with a Waldorf school for ten years, but they're not familiar with the book.
-Joe Offer-