The Progressive Reference Library

"The Progressive Reference Library" stands as a comprehensive and authoritative compendium of global knowledge, designed to provide a systematic overview of human achievement and the natural world. This eighth volume continues the tradition of meticulous scholarship established by editor-in-chief Bernhart P. Holst, offering readers an expansive resource that spans diverse disciplines, including history, science, geography, and biography.

As a significant artifact of early 20th-century pedagogy and reference literature, this work reflects the intellectual landscape of its era. It serves not only as a functional tool for students and educators but also as a fascinating window into the state of academic discourse and public information during the 1930s. Each entry is crafted with a focus on clarity and educational utility, making complex topics accessible to a broad audience. Whether utilized for specific research or general inquiry, "The Progressive Reference Library" remains a testament to the enduring human endeavor to organize and preserve the collective wisdom of civilization.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you may see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.

This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.