Tekst achterflap

The lessons which compose this volume originally appeared in monthly form, the first of which was issued in October, 1907, and the twelfth in September, 1908. These lessons met with a hearty and generous response from the public, and the present volume is issued in response to the demand for the lessons in a permanent and durable form. There has been no change in the text. Includes a new introduction by Karl Wurf.

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