Excerpt from Catalog of Copyright Entries, Vol. 41: Part 1, Books, Group 2; For the Year 1944; Nos. 1-12 Bell system practices. Teletypewriter and man ual. Telegraph station and p.b.x. Installa tion and maintenance. Oct. 6, 19, Nov. 5, 1943; AA 444829-444832. 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.