"c VAR 0222 03039 EX MAIN 3R 907-942 MD= 1E-37 " "c REF 0222 LOC 1959 WIDTH 9 DK 31 COL 71-79 " "c EXP DEC= 1 " "c " "c OPERATING EXPENSES, MAINTENANCE AND EQUIPMENT, CLASS I " "c RAILROADS " "c ------------------------------------------------------ " "c " "c NBER SERIES: 03039 " "c AREA COVERED: U.S. " "c UNITS: MILLIONS OF DOLLARS " "c ANNUAL COVERAGE: NONE " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: 07/1907-04/1942 " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE: INTERSTATE COMMERCE COMMISSION, DATA FOR 1907-1909: " "c "BULLETIN OF REVENUES AND EXPENSES OF STEAM ROADS IN THE " "c UNITED STATES", NO. 5, P. 13; NO. 18, P. 13; NO. 31, P. 13. " "c DATA FOR 1910-1921: "STATISTICS OF RAILWAYS", 1921, P. C. " "c DATA FOR 1922-1942: OPERATING REVENUES AND OPERATING " "c EXPENSES OF CLASS I STEAM RAILWAYS IN THE UNITED STATES". " "c " "c NOTES: DATA FOR 1907-OCTOBER 1910 AND 1931-1942 EXCLUDE " "c SWITCHING AND TERMINAL COMPANIES. " "c THE FIGURE FOR JUNE 1918 WAS AFFECTED BY AN INCREASE IN " "c WAGES; THE FIGURE FOR AUGUST 1920 WAS ALSO AFFECTED BY A " "c WAGE INCREASE, EFFECTIVE JULY 20 AND RETROACTIVE TO MAY 1, " "c 1920. " "c " "c CHECKED MANUALLY; NO CORRECTIONS NECESSARY. " "c " "c ............................................................... "