The Charles Blumsack Collection of Astronomy Search

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The Ritter Observatory & Planetarium

1 pp 1906

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The University of Chicago Yerkes Observatory

1 pp 1906

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The University of Chicago Yerkes Observatory

1 pp 1906

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The University of Chicago. Yerkes Observatory, Williams Bay, Wis.

1 pp 1906

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The University of Michigan's 1854 Detroit Observatory

1 pp 1906

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The University of Texas McDonald Observatory's 107-inch telescope

1 pp 1906

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The Yerkes Observatory of the University of Chicago, William Bays, Wisconsin

1 pp 1906

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The dome of Palomar Observatory's 200" telescope is shown here on the morning after a winter storm

1 pp 1906

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The great nebula in Andromeda as photographed with the two-foot reflector, Yerkes Observatory, University of Chicago, Williams Bay, Wisconsin

1 pp 1906

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The honeycombed structure of the 200" mirror sets waiting for the thin aluminum coating that will give it its high reflectivity

1 pp 1906

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#dz011165p

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The moon, twenty two and one half days old, showing craters, mountain rangers and plains

1 pp 1906

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The observatory at Bucknell University, Lewisberg, Pa., offers fine facilities for study and research in astronomy

1 pp 1906

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The Charles Blumsack Collection of Astronomy

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The Ritter Observatory & Planetarium

The University of Chicago Yerkes Observatory

The University of Chicago Yerkes Observatory

The University of Chicago. Yerkes Observatory, Williams Bay, Wis.

The University of Michigan's 1854 Detroit Observatory

The University of Texas McDonald Observatory's 107-inch telescope

The Yerkes Observatory of the University of Chicago, William Bays, Wisconsin

The dome of Palomar Observatory's 200" telescope is shown here on the morning after a winter storm

The great nebula in Andromeda as photographed with the two-foot reflector, Yerkes Observatory, University of Chicago, Williams Bay, Wisconsin

The honeycombed structure of the 200" mirror sets waiting for the thin aluminum coating that will give it its high reflectivity

The moon, twenty two and one half days old, showing craters, mountain rangers and plains

The observatory at Bucknell University, Lewisberg, Pa., offers fine facilities for study and research in astronomy