Pro tem  :  presidents pro tempore of the United States Senate since 1789  / 
 Presidents pro tempore of the United States Senate since 1789 
prepared by the Senate Historical Office ; under the direction of Nancy Erickson, Secretary of the Senate ; with a preface by Senator Robert C. Byrd, President pro tempore. 
 - 1 online resource (116 pages) :  illustrations. 
 - S. pub. ;  110-18 .
 - S. pub. ;  110-18. .
<br/><br/> Includes index.  GPO Cataloging Record Distribution Program (CRDP). 
<br/><br/>Foreword -- Preface -- The formative years, 1789-1860 -- A question of succession, 1861-1889 -- Fathers of the Senate, 1890-1946 -- The modern era, 1947-present -- Credits for illustrations -- Name index. 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Congress.  Senate --Presiding officers.<br/>United States. Congress.  Senate --History.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Legislative materials.
<br/><br/><label>GPO Item No.: </label>0998-A-01 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>Y 1.3:S.PUB.110-18