"c           VAR 0623      02082A RR BLD    830-952               MD= 1E-37   "
"c           REF 0623         LOC  529 WIDTH  9             DK   9 COL 35-43  "
"c                                                                            "
"c                                                                            "
"c              MILES OF RAILROAD BUILT, BUREAU OF THE CENSUS-RAILWAY AGE     "
"c              ---------------------------------------------------------     "
"c                                                                            "
"c              NBER SERIES: 02082A                                           "
"c              AREA COVERED: U.S.                                            "
"c              UNITS: MILES                                                  "
"c              ANNUAL COVERAGE: 1830-1952                                    "
"c              QUARTERLY COVERAGE: NONE                                      "
"c              MONTHLY COVERAGE: NONE                                        "
"c              SEASONAL ADJUSTMENT: NONE                                     "
"c              SOURCE: 1830-1879:"HISTORICAL STATISTICS OF THE UNITED        "
"c              STATES, COLONIAL TIMES TO 1957," BUREAU OF THE CENSUS,        "
"c              SERIES Q43. 1880-1952:"RAILWAY AGE," SIMMONS-BOARDMAN         "
"c              PUBLISHING CORP., NEW YORK, JANUARY 1, 1938, AND LATER        "
"c              ANNUAL REVIEW ISSUES.                                         "
"c                                                                            "
"c              NOTES: THESE DATA REFER TO MILES OF FIRST TRACK COMPLETED IN  "
"c              A CALENDAR YEAR. IT IS NOT CLEAR AT WHAT STAGE THE BUILDING   "
"c              OF A MILE OF ROAD WAS REPORTED. IF CONSTRUCTION OF A LINE     "
"c              TOOK SEVERAL YEARS, A COMPANY MAY HAVE REPORTED EACH YEAR,    "
"c              OR MIGHT HAVE WAITED UNTIL THE WHOLE LINE WAS COMPLETED.      "
"c              SOMETIMES THE YEAR OF COMPLETION DIFFERED FROM THE YEAR IN    "
"c              WHICH TRAFFIC WAS FIRST CARRIED; IN SUCH CASES THE MILEAGE    "
"c              MAY HAVE BEEN ASSIGNED TO EITHER YEAR.                        "
"c                  THE DATA FOR 1830-79 ARE ORIGINALLY FROM THE TENTH        "
"c              CENSUS REPORT, VOL.IV,"REPORT ON THE AGENCIES OF              "
"c              TRANSPORTATION IN THE UNITED STATES.                          "
"c                  THESE DATA WERE COMPILED BY THE BUREAU OF THE CENSUS      "
"c              FROM REPORTS OF RAILROADS KNOWN TO EXIST IN 1880. THEY ARE    "
"c              LIMITED TO MILEAGE STILL IN OPERATION IN THE CENSUS YEAR      "
"c              1880.                                                         "
"c                  RAILWAY AGE OBTAINED ITS FIGURES AT ANNUAL INTERVALS      "
"c              FROM INDIVIDUAL RAILROADS AND FROM STATE RAILROAD             "
"c              COMMISSIONS.                                                  "
"c                  FOR DATA ON GROSS CAPITAL EXPENDITURE, INCLUDING ROAD     "
"c              AND EQUIPMENT, BEGINNING IN 1870, SEE MELVILLE J. ULMER,      "
"c             "CAPITAL IN TRANSPORTATION COMMUNICATIONS, AND PUBLIC          "
"c              UTILITIES: ITS FORMATION AND FINANCING," PRINCETON            "
"c              UNIVERSITY PRESS FOR NBER, 1960, P.255 FF.                    "
"c                  RAILROAD INVESTMENT DATA FOR THE PRE-CIVIL WAR PERIOD,    "
"c              BEGINNING IN 1828, ARE AVAILABLE IN ALBERT FISHLOW,           "
"c             "AMERICAN RAILROADS AND THE TRANSFORMATION OF THE              "
"c              ANTE-BELLUM ECONOMY", HARVARD UNIVERSITY PRESS, 1965.         "
"c                                                                            "
"c              ORIGINALS MISSING; NOT PROOFREAD.                             "
"c           ...............................................................  "