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Image strip over the Indus River, Pakistan
ARP15A02_074

Image strip over the Indus River, Pakistan

Photograph of United Nations monitoring the electoral process in Nicaragua, Central America
ARP23A15_171

Photograph of United Nations monitoring the electo...

Photograph of a physicist monitoring a complex experiment using a closed respirometer
ARP23A15_270

Photograph of a physicist monitoring a complex exp...

Photograph of a physicist monitoring a complex experiment using a closed respirometer
ARP23A15_271

Photograph of a physicist monitoring a complex exp...

Engraving of a Coelostat by Léon Foucault
ARP23A13_315

Engraving of a Coelostat by Léon Foucault

Photograph of a Coelostat being used at the Cambridge University observatories
ARP23A13_312

Photograph of a Coelostat being used at the Cambri...

Photograph of a Coelostat being used at the Cambridge University observatories
ARP23A13_313

Photograph of a Coelostat being used at the Cambri...

General Robert E. Lee holding binoculars
ARP18A09_442

General Robert E. Lee holding binoculars