The A B C Of Railroad Signaling A Lecture Delivered Before The Harvard School Of Business Administration

Excerpt from The A B C Railroad Signaling: A Lecture Delivered Before the Harvard School of Business Administration This little book is intended to conduct the student, engineer, or railroad officer who desires a working knowledge of Signaling merely to the entrance to its inner workings and apparently mysterious applications. It is put forth to serve as the first step - the A B C of Railroad Signaling. It is the earnest hope of the publishers, that, should the learner desire to penetrate further, his way will have been made easier to travel, in a measure, at least, by the reading of this first simple presentation of the broad principles of the subject. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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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 will 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.