The New Silent Readers Book Set - New Friends, The Wonder World, Facts and Fancies The Black Stallion which leads me to believe

which leads me to believe these were printed especially for schools in this style

Author:  Selma Lagerlof

no writing

Minor spine & cover wear noted

The New Silent Readers Book Set - New Friends, The Wonder World, Facts and Fancies The Black Stallion which leads me to believeTitle: The New Silent Readers A Basal Activity Series Book Set: Book II: New Friends, Book III: The Wonder World and Book IV: Facts and Fancies Format: Clothbound Hardcovers Authors: William Dodge Lewis, Pd. D. & Albert Lindsay Rowland, Ph. D. & Ethel Maltby Gehres Illustrators: Eunice Stephenson, Hattie Longstreet Price, and Florence J. Hoopes and Margaret Campbell Hoopes Copyright Years: 1937, 1930 & 1930 Publisher: The John C. Winston Company