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From left to right:

“The Univac 642B Command Computer on the Left, next is the Expanded Memory Unit (EMU), which dates the photo, next is the Univac 642B Telemetry Computer and on the far right
is the tape handler for the Telemetry Computer.

The tape handler for the Command Computer is out of the photo on the left.

The Expanded Memory Unit was installed in 1967. A Univac Engineer (whose
name I can’t remember) was sent out to give us four day’s training on this
piece of equipment.”

– Notes by Ron Hicks unless otherwise specified.

Click the picture for a larger version.