This collection is a sub-subgroup under the Montana Department of Transportations records, RS 492. The Communications Bureau operates under the DOT Maintenance Division. To see the other Department of Transportation records, visit the primary finding aid, RS 492.

This collection is comprised of correspondence and subject files documenting the design, implementation and monitoring of statewide communications systems. Correspondence (1952-1978) is between the Communications Bureau and various government agencies, including the Bureau of Land Management, the Civil Aeronautics Administration, the Corps of Engineers, and the Federal Bureau of Investigations. Subject files in this collection deal with various Communications Bureau projects, including c.b. base station cost estimates and reports, information about Teletype machines used by Montana state agencies, and information about radio towers.