Well, it was actually 17 years ago exactly - December 1989. And it was in "FSM Tips and Techniques" page 79.
Air tank, regulator and 2 male-male threaded nipples to connect Sears regulator to tank regulator and airbrush hose to Sears regulator.
Tank-tank regulator-nipple-Sears regulator-nipple-airbrush hose.
You could either fill the tank at the local gas station or buy a cheap cigarette lighter type car air compressor to fill the tank in your garage.
The "Tip" included a photo which helped me connect things right, but its not that hard.