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Elias Allen.
UMG23A61_259

Elias Allen.

Istituto mario negri, milan
UMG23A15_365

Istituto mario negri, milan

Copernican Solar System
UMG22A66_245

Copernican Solar System

Navigation Instruments
UMG22A65_345

Navigation Instruments

Constellation Chart
UMG22A66_146

Constellation Chart

Mariners Mirror
UMG22A66_229

Mariners Mirror

astronaut Anna Fisher
UMG22A56_488

astronaut Anna Fisher

Pathfinder in flight over Hawaii - Pathfinder, NASA's solar-powered, remotely-piloted aircraft is shown while it was conducting a series of science flights to highlight the aircraft's science capabili...
UMG22A39_429

Pathfinder in flight over Hawaii - Pathfinder, NAS...

Harry Mergler with His Modified Differential Analyzer 1951
UMG22A32_437

Harry Mergler with His Modified Differential Analy...

Kiwi-A3 Nuclear Rocket Test
UMG22A00_020

Kiwi-A3 Nuclear Rocket Test

Heinrich Daniel Ruhmkorff
UMG20B19_376

Heinrich Daniel Ruhmkorff

Carnegie Institute Scientists
UMG20A12_409

Carnegie Institute Scientists

Searching For Germs
UMG20A12_394

Searching For Germs

Chemist Working In A Lab
UMG20A12_395

Chemist Working In A Lab

An Early Telescope
UMG20A12_326

An Early Telescope