Includes new and revised pages to pt. 41, Telegraph and telephone franks; pt. 42, Preservation of records of communications common carriers and certain affiliates; pt. 43, Reports of communications common carriers and certain affiliates; pt. 51, Occupational classification and compensation of employees of class A and class B telephone companies; pt. 52, Classification of wire telegraph employees; pt. 61, Tariffs; pt. 62, Applications to hold interlocking directorates; pt. 63, Extension of lines and discontinuance of service by carriers; pt. 64, Miscellaneous rules relating to common carriers; pt. 66, Applications relating to consolidation, acquisition, or control of telephone companies; pt. 67, Jurisdictional separations.
Updated by continuing supplementary material for an indefinite period.