S&P Global Ratings: Difference between revisions

[[File:Poor's Directory of Railroad Officials 1893 (Frontispiece).jpg|thumb|right|"Poor's Directory of Railroad Officials", 1893 (frontispiece)]]The company traces its history back to 1860, with the publication by [[Henry Varnum Poor]] of ''History of Railroads and Canals in the United States''. This book compiled comprehensive information about the financial and operational state of U.S. railroad companies. In 1868, Henry Varnum Poor established '''H.V. and H.W. Poor Co.''' with his son, [[Henry William Poor]], and published two annually updated hardback guidebooks, ''[[Poor's Manual of the Railroads of the United States]]'' and ''Poor's Directory of Railway Officials''.<ref name="snphistory"/><ref name=time-history>{{cite news