Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Dollars, Not Seasonally Adjusted

Frequency:  Monthly

Series Is Presented Here As Three Variables--(1)--Original Data, 1915-1933 (2)--Original Data, 1933-1948 (3)--Original Data, 1948-1961. This Variable Is For"Large" Carriers Having Annual Operating Revenues Of More Than $250,000, Accounting For About 96 % Of Gross Revenues Of All Telephone Carriers In 1937 (97 Companies In 1941). Data Compiled By The Interstate Commerce Commission Prior To 1934. Because Of Changes In Accounting Classifications, This Variable Is Not Comparable To The Interstate Commerce Commission Series Of Operating Income, Except For 1932 Through May, 1934. Data For May, 1934 And November And December, 1935 Are Returns Which Reflect Adjustments Covering Estimated Refunds. Data For June, 1936 And January And December, 1937 Are Returns Which Reflect Depreciation Adjustments On Property In Nebraska. For The Years 1941-1942, A Number Of Monthly Revisions Were Taken From The Survey Of Current Business, 1947 And 1951 Stat. Supplements. Note That Data From 1943 Through 1951 Refer To The Continental United States. The Federal Communications Commission Shows Data Which Include Operations Of 3 Companies Outside The U.S., Beginning In 1943 (Back Data Available For 1942). The Figures Shown Here Are From The Column Called "Inside The United States" In The Monthly Report. These Are Also The Data Shown Through 1951 By The Survey Of Current Business From 1952 On, Reports By Companies In Hawaii And Puerto Rico Have Been Included. After December, 1948, Data Have A New Basis. The Data For 1948 Are From "Current" Reports, And Are Unrevised. Source: Federal Communication Commission Fifth Annual Report, P.149, For 1933-1938 Data. Therafter, Data Were Furnished By The Federal Communication Commission Accounting, Statistics And Tariff Department, Operating Data From Monthly Reports Of Principal Telephone Carriers.

This NBER data series m09003b appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.

NBER Indicator: m09003b