I longed for the pure sky and the free air.

The six white contrails, so high above in the pure blue sky, circled the area once, then headed back the way they had come.

But this expansion never has been pure blue sky.

It was the first time in a week that Baedecker had seen a pure blue sky.

And above there was the unbelievably pure and very dark blue sky.

Watch the pure blue sky, which never contained a red-hot sun.

Beyond the cell ceiling, stars shone untwinkling in a pure black sky.

It was a perfect June day, with only a few light clouds flecking a pure blue sky.

Even the pure blue sky seemed washed, too.

The sun rose in a pure sky and flooded with his rays all the eastern side of the mountain.