Enigma Machine
Cordelia Molloy/science Photo Library
Penicillin Use #2
Library Of Congress/science Photo Library
Penicillin Use
Library Of Congress/science Photo Library
Penicillin Use #3
Library Of Congress/science Photo Library
Penicillin Use #1
Library Of Congress/science Photo Library
Penicillin Use
Us National Archives/science Photo Library
British Women Farming In Wwii
Library Of Congress/science Photo Library
Air Display
Jim Edds/science Photo Library
Token For Penicillin, 20th Century #1
Science Photo Library