Keystone View Company

Inscribed, recto, along left edge, stamped in black ink, "Keystone View Company | Manufacturers | Publishers"
Inscribed, recto, along left edge, stamped in black ink, "Copyrighted | Made in U.S.A."
Inscribed, recto, top edge, stamped in black ink, "597"
Inscribed, recto, bottom edge, stamped in black ink, "16767 - The Planet Saturn, Copyright Solar Observatory | Carnegie Institute, Washington, D.C."
Inscribed, recto, along right edge, stamped in black ink, "Meadville, P.A., New York, N.Y., Portland | Oregon, London, Eng., Sydney, Aus."
Inscribed, verso, UR, graphite, "$15-"
Inscribed, verso, first column, stamped in black ink, "597--(16767) | THE PLANET SATURN AND ITS RINGS | The is one of the most beautiful objects in | the sky and is unique among the planets. In the | telescope, it shines with a strong golden color. | The mean diameter of the globe of Saturn is | 73,000 miles - nine times that of the Earth. It | would make about 760 Earths, in bulk. The ex- | treme diameter of the rings is 173,000 miles. | The breadth of the outside ring is more than | 10,000 miles. The other diameter of the inside | ring is 145,000 miles. Its breadth is 16,500 miles. | It is more than 10,000 miles from the planet to | the inner edge of the inside ring. The space be- | tween the two rings is about 2000 miles. | These rings are perhaps less than 100 miles in | thickness. They are so thin that when on edge | to us they are invisible in all telescopes. This | invisibility occurs every 15 years, the last of | which was in 1907. It has been proved that the | rings are made up of a countless number of very | small satellites (sat e-lit) revolving around the"
Inscribed, verso, second column, stamped in black ink, "planet like swarms of tiny moons close together. | The mean distance of Saturn from teh Sun is | nearly 900,000,000 miles. Its weight or density | is about one-fifth that of water. That is, if there | was an ocean big enough to hold it, it would float | like a cork. No life such as we know on the | earth, could exist on Saturn. | The rings about Saturn preplexed ancient as- | tronomers. They called it the planet with ears. | Little as we still know, we have some facts about | it. We know its huge size and about its light | weight. We know its days are only 10 hours and | 14 minutes long. But we do not know of what | the planet is made. It may be of gases and | vapors, or it may be solid. | This photograph was made with the great five- | foot reflecting telescope at the Solar Observatory | of the Carnegie Institution at Mount Wilson, Cali- | fornia on November 19, 1911, by E. E. Barnard of | the Yerkes Observatory Staff. | Copyright by the Keystone View Company."