Lessons on Objects, Schulbücher von Elizabeth Mayo, Edward A. Sheldon

Primary Object Lessons for a Graduated Course of Development, Schulbücher von Norman Allison Calkins

Andersonville | An Object Lesson On Protection | Herman A. Braun |

Lessons on Morals, Schulbücher von Julia M. Dewey

Pestalozzi and His Principles, Fachbücher von Robert Dunning, Elizabeth Mayo, Charles Mayo

English and Sinhalese lesson book on Ollendorff's system, Schulbücher von Charles Carter

Judith A. Courter | The Object Lesson | Taschenbuch | Englisch (2003)

The Report On Unidentified Flying Objects By Edward J. Ruppelt

Natural history object lessons:, Fachbücher von George Ricks

Primary object lessons, Fachbücher von Norman Allison Calkins

More Mini Adventures in Jerusalem, Schulbücher von Sheldon Lewis

Natural History Object Lessons: | A Manual For Teachers | George Ricks

Primary Object Lessons For A Graduated Course Of Development | Calkins

A Teachers' Manual of Lessons in Language, Schulbücher von Horace Sumner Tarbell

A series of first lessons in Greek, Schulbücher von John Williams White

Dual Diagnosis, Fachbücher von Edward Shollar, Sheldon Zimberg, Joel Solomon