Bausch & Lomb Spectroscope - Science History Institute Digital Collections

Bausch and Lomb Hall

Science History Institute Digital Collections

Prism spectroscope hi-res stock photography and images - Alamy

Science History Institute Digital Collections

Bausch lomb microscope hi-res stock photography and images - Alamy

Science History Institute Digital Collections

Science History Institute Digital Collections Search Results

Science History Institute Digital Collections

Science History Institute Digital Collections