At head of title: Interstate commerce commission. Bureau of statistics.
"Since 1914 monthly summaries of revenues and expenses of large steam roads have not been issued in printed form by the commission. A limited number of copies of such summaries, however, have by a duplicating process been prepared primarily for the use of the press ... To make the data generally available, the monthly figures from July, 1914, to December, 1919, are reproduced in printed form in the following pages."--Explanatory note.