Excerpt from Time and Frequency, a Bibliography of Nbs Literature: Published July 1955-December 1970 This bibliography lists nbs papers and reports in the field of time and frequency under five categories and by fiscal year, published from June 1955 through December 1970. The cited work is principally that of the Time and Frequency Division; however, important related work in the time and frequency area by other nbs personnel also is listed. We include an nbs author index as well as a selected listing of non-nbs written articles about our work. This latter section gives a sampling of reports and papers which describe and illustrate, for instance, instrumentation methods for comparability to nbs time and frequency standards, the use of the nbs radio broadcasts and services, and the scope and depth of such usage. The contents of this bibliographic listing exemplify the extent and character of work performed by the Time and Frequency Division. (the listing is in the form of an nbs Special Publication which we plan to update periodically.) The Division welcomes questions and provides consultation services on matters relating to time and frequency. Appendix I shows the section structure and responsibilities of the Division. Appendix 11 indicates the various time and frequency broadcast notices, bulletins, HF prediction notices, etc., available to the public on the basis of need. 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.