100-inch telescope south float, pedestal and worm wheel, Mount

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Engineering drawing of the south pedestal for the Hooker 100-inch

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100-inch telescope south float, pedestal and worm wheel, Mount

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Engineering drawing of the south pedestal for the Hooker 100-inch

100 inch telescope, Mt. Wilson Observatory, largest in U.S.A.

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Installation of trunnion on the south float of the 100-inch

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