104 Free Images of Refine

united states naval observatory1873 works in the united statestelescopes containing lenses ground by alvan clark & sonsalvan clark
Antique Mexican painting, Tree of Nectar, Hotel Belmar, Mazatlan, Sinaloa, Mexico
animalsbird
Women workers at plant of American Sugar Refining Company, Brooklyn, New York, where great quantities of sugar are... - NARA - 533762
historicalhistory
Usno-telescope-equalized-1, Alvan Clark
united states naval observatory1873 works in the united states
USNO26in-2, Alvan Clark
united states naval observatory1873 works in the united states
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