Astrodata room at the CN Telex Telecommunications Centre

Bank of tape drives for data storage in Telex facility

Collins C-8500 computer's disc drive with very large vertically mounted discs

Canadian National Telecommunications Data Centre

Microwave tower with Signal Hill and Battery Cove in background

Telephone operators working at new computer workstations in the Gander Exchange building

Passengers “listen in” aboard Maple Leaf radio car

Station personnel in CNRO broadcast room

CNR performers in CNRO studio

CNR executives beside car equipped for broadcast reception and radio communication

Engineer (Finnemore) of steam locomotive communicating by radio

A CNR executive tests radio communication with a locomotive

Dispatcher transmits train orders

Checking prices received by a stock ticker, Toronto Stock Exchange

Workers lay cable in underground conduits

Lineman cuts telegraph wire

Engineer of diesel locomotive receives train orders

Train crewman communicates by radio

Switchboard operators, Avalon Telephone Company

Telex operators

Repair workers on microwave tower

General manager of CN Telegraph speaks over radio-telephone from moving train

Parabolic radio antennas, tropospheric scatter relay station

Microwave radio tower and cable car, Pyramid Mountain

Parabolic radio antennas, tropospheric scatter relay station

Men assemble parabolic antenna framework

Tripods replace poles to carry wires over permafrost

Snotrac in front of microwave relay station

RCMP officer sends photograph via facsimile machine

Telex operator types message on teleprinter

Engineer checks wiring on microwave radio tower

Use of mobile radio during construction of microwave radio system

Microwave radio relay station

Winter operations, Canada-Alaska microwave system

Workers prepare to raise microwave dish

Engineer checks guy cable, microwave tower construction

Worker tightens guy cable

Prime Minister John Diefenbaker opens Canada-Alaska microwave radio system

Microwave radio tower

Lineman at work

First FM radio-telegraph links between Montreal, Sorel and Granby

Cleaning a teletype machine

Corner reflector radio antennas - Canadian National Telecommunications

Canadian National Telecommunications teletype and facsimile terminals

Installing telephone service

Adjusting a page teletype machine

Sending a telegram on a multiplex machine - Canadian National Telegraph

Receiving a telegram on a multiplex machine