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Westinghouse F7 Man's newest duplicator of Nature's radium bombardments, 90-ton pear-shaped 'cannon' at the Westinghouse Research Laboratories	Westinghouse F8 View of the Westinghouse Atom Smasher exterior	Westinghouse F9 Cross section of the accelerator of the Westinghouse Atom Smasher	Westinghouse H1 The Westinghouse Atom Smasher at the site of the research laboratories in Forest Hills, PA	Westinghouse H2 Aerial view of the Shippingport Atomic Power Station on the Ohio River at Shippingport, Pennsylvania
Wills Laboratory E1 July 1935 Metallic State Conference	Wills Laboratory E2 Participants at University of Bristol International Conference on the Physics of Metals	W M Keck Observatory H1 Steelworkers maneuver a piece of the Keck Telescope into position at the observatory site	W M Keck Observatory H2 Steelworkers hoist a piece of the Keck Telescope into the dome for installation at the observatory site	W M Keck Observatory H3 Steelworkers weld a temporary support in preparation for installation of a piece of the Keck Telescope
Leitner Family Observatory H1 View of the Loomis Telescope building at the Leitner Family Observatory	Leitner Family Observatory H2 View of a photometer mounted on the Loomis Telescope at the Leitner Family Observatory	Yale University E1 Sloane Laboratory Personnel at Yale University, May 1951	Yerkes Observatory C1 John D. Rockefeller and William R. Harper at the Yerkes Observatory dedication	Yerkes Observatory C2 Three unidentified men inside of the Alvan Clark and Sons Telescope Factory
Yerkes Observatory D1 Williams Bay Domestic Science class at the Yerkes Observatory	Yerkes Observatory E1 Yerkes Observatory staff in August 1919	Yerkes Observatory E2 Group sits on steps at the Yerkes Observatory	Rouse Carl G1 Lorraine Moxley-Rouse and Carl Rouse	Yerkes Observatory E3 Group at the dedication of the Yerkes Observatory