This is the upper level where the Atlas peripherals will be housed. The window to the right is the service window through which can be seen the Data Preparation area.
The first photo is taken from the doorway into the tape and card store. Later, Jim Hailstone would install a robot tape store in this area.
The Data Preparation area with the service window into the Atlas machine room on the left.
By now, the building is nearly ready for takeover
But there is still a bit of cleaning up to do!