English: Astronomy was once a simple hobby of Dr. Gustavus Wynne Cook, Philadelphia banker. He grew so absorbed in it that he spent $100,000 on his equipment, including a 28½-in. telescope. Now his observatory is a scientific institution with paid astronomers on duty. - Life Magazine Jan 2 1939
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Captions
Amateur astronomer Gustavus Wynne Cook with his private telescope which cost him $100,000