Includes selections from Little Sioux Girl and Prairie School by Lois Lowry, A Wrinkle in Time by Madeline L'Engle, as well as Sailing to Cytheria and other stories by Nancy Willard, Tales from Silver Lands by Charles J. Finger, and short stories "Priscilla and the Wimps" by Richard Peck and "Tom and Jerry" by Will James.
Unfortunately, this information isn't available about the source of these stories except in tiny text on the verso of the title plage, a weakness of this Newbery Authors series.