YERKES OBSERVATORY.
Group of 5 details of the lunar surface, from Yerkes Observatory, Williams Bay, WI, c.1900, platinum prints mounted, 7¼ x 7¾ inches (185 x 200 mm) and slightly smaller, together with gelatin silver print mounted of the Moon, 7¾ x 9¾ inches (200 x 250 mm), and halftone reproduction of one of the platinum prints published by The Binner Mark of Chicago.
Yerkes Observatory was founded in 1897 by George Ellery Hale and financed by Charles T. Yerkes. It is noted for its collection of over 150,000 photographic plates dating from the 1890s onwards.